Ribbons, there seems to be a lot of space for them in the PokéNav screens, and since there are so many, here I will list them and how to get them, and soon, hopefully Pictures of them:

Ribbon Details Obtained By Picture
BEAUTY CONTEST-Normal Rank Winner Winning the Beauty Contest Normal Rank
BEAUTY CONTEST-Super Rank Winner Winning the Beauty Contest Super Rank
BEAUTY CONTEST-Hyper Rank Winner Winning the Beauty Contest Hyper Rank
BEAUTY CONTEST-Master Rank Winner Winning the Beauty Contest Master Rank
COOL CONTEST-Normal Rank Winner Winning the Cool Contest Normal Rank
COOL CONTEST-Super Rank Winner Winning the Cool Contest Super Rank
COOL CONTEST-Hyper Rank Winner Winning the Cool Contest Hyper Rank
COOL CONTEST-Master Rank Winner Winning the Cool Contest Master Rank
CUTE CONTEST-Normal Rank Winner Winning the Cute Contest Normal Rank
CUTE CONTEST-Super Rank Winner Winning the Cute Contest Super Rank
CUTE CONTEST-Hyper Rank Winner Winning the Cute Contest Hyper Rank
CUTE CONTEST-Master Rank Winner Winning the Cute Contest Master Rank
SMART CONTEST-Normal Rank Winner Winning the Smart Contest Normal Rank
SMART CONTEST-Super Rank Winner Winning the Smart Contest Super Rank
SMART CONTEST-Hyper Rank Winner Winning the Smart Contest Hyper Rank
SMART CONTEST-Master Rank Winner Winning the Smart Contest Master Rank
TOUGH CONTEST-Normal Rank Winner Winning the Tough Contest Normal Rank
TOUGH CONTEST-Super Rank Winner Winning the Tough Contest Super Rank
TOUGH CONTEST-Hyper Rank Winner Winning the Tough Contest Hyper Rank
TOUGH CONTEST-Master Rank Winner Winning the Tough Contest Master Rank
RIBBON for been Chosen as a Super Sketch Model Getting your Pokémon's Picture in the Art Gallery
RIBBON awarded for been a hard worker Showing the Girl In Slateport Market a Pokémon with maxed Effort Values
CHAMPION-beating HALL OF FAME member Ribbon Beating the Elite Four
50-straight Win Commemorative RIBBON Beating 50 Trainers in the Battle Tower in a row!
100-straight Win Commemorative RIBBON Beating 100 Trainers in the Battle Tower in a row!

Then We have ribbons which are un-obtainable but are expected to be unlocked either in Official Tournements or through Pokémon Colosseum
Ribbon Name Obtained By Pic

2003 REGIONAL TOURNEY CHAMPION RIBBON

Unobtainable At Present
 

2003 NATIONAL TOURNEY CHAMPION RIBBON

Unobtainable At Present
 

2003 GLOBAL CUP CHAMPION RIBBON

Unobtainable At Present
 

2003 REGIONAL TOURNEY Runner-up RIBBON

Unobtainable At Present
 

2003 NATIONAL TOURNEY Runner-up RIBBON

Unobtainable At Present
 

2003 GLOBAL CUP Runner-up RIBBON

Unobtainable At Present
 

2003 REGIONAL TOURNEY Semifinalist RIBBON

Unobtainable At Present
 

2003 NATIONAL TOURNEY Semifinalist RIBBON

Unobtainable At Present
 

2003 GLOBAL CUP Semifinalist RIBBON

Unobtainable At Present
 

2004 REGIONAL TOURNEY CHAMPION RIBBON

Unobtainable At Present
 

2004 NATIONAL TOURNEY CHAMPION RIBBON

Unobtainable At Present
 

2004 GLOBAL CUP CHAMPION RIBBON

Unobtainable At Present
 

2004 REGIONAL TOURNEY Runner-up RIBBON

Unobtainable At Present
 

2004 NATIONAL TOURNEY Runner-up RIBBON

Unobtainable At Present
 

2004 GLOBAL CUP Runner-up RIBBON

Unobtainable At Present
 

2004 REGIONAL TOURNEY Semifinalist RIBBON

Unobtainable At Present
 

2004 NATIONAL TOURNEY Semifinalist RIBBON

Unobtainable At Present
 

2004 GLOBAL CUP Semifinalist RIBBON

Unobtainable At Present
 

2005 REGIONAL TOURNEY CHAMPION RIBBON

Unobtainable At Present
 

2005 NATIONAL TOURNEY CHAMPION RIBBON

Unobtainable At Present
 

2005 GLOBAL CUP CHAMPION RIBBON

Unobtainable At Present
 

2005 REGIONAL TOURNEY Runner-up RIBBON

Unobtainable At Present
 

2005 NATIONAL TOURNEY Runner-up RIBBON

Unobtainable At Present
 

2005 GLOBAL CUP Runner-up RIBBON

Unobtainable At Present
 

2005 REGIONAL TOURNEY Semifinalist RIBBON

Unobtainable At Present
 

2005 NATIONAL TOURNEY Semifinalist RIBBON

Unobtainable At Present
 

2005 GLOBAL CUP Semifinalist RIBBON

Unobtainable At Present
 

POKéMON BATTLE CUP CHAMPION RIBBON

Unobtainable At Present
 

POKéMON BATTLE CUP Runner-up RIBBON

Unobtainable At Present
 

POKéMON BATTLE CUP Semifinalist RIBBON

Unobtainable At Present
 

POKéMON BATTLE CUP Participation RIBBON

Unobtainable At Present
 

POKéMON LEAGUE CUP CHAMPION RIBBON

Unobtainable At Present
 

POKéMON LEAGUE CUP Runner-up RIBBON

Unobtainable At Present
 

POKéMON LEAGUE CUP Semifinalist RIBBON

Unobtainable At Present
 

POKéMON LEAGUE CUP Participation RIBBON

Unobtainable At Present
 

ADVANCE BATTLE CUP CHAMPION RIBBON

Unobtainable At Present
 

ADVANCE BATTLE CUP Runner-up RIBBON

Unobtainable At Present
 

ADVANCE BATTLE CUP Semifinalist RIBBON

Unobtainable At Present
 

ADVANCE CUP Participation RIBBON

Unobtainable At Present
 

POKéMON Tournament Participation RIBBON

Unobtainable At Present
 

POKéMON Event CUP Participation RIBBON

Unobtainable At Present
 

POKéMON Festival CUP Participation RIBBON

Unobtainable At Present
 

Difficulty-clearing Commemorative RIBBON

Unobtainable At Present
 

RIBBON awarded for clearing all difficulties

Unobtainable At Present
 

100-straight Win Commemorative RIBBON

Unobtainable At Present
 

DARKNESS TOWER Clear Commemorative RIBBON

Unobtainable At Present
 

RED TOWER Clear Commemorative RIBBON

Unobtainable At Present
 

BLACKIRON TOWER Clear Commemorative RIBBON

Unobtainable At Present
 

FINAL TOWER Clear Commemorative RIBBON

Unobtainable At Present
 

Legend-making Commemorative RIBBON

Unobtainable At Present
 

POKEMON CENTER TOKYO Commemorative RIBBON

Unobtainable At Present
 

POKEMON CENTER OSAKA Commemorative RIBBON

Unobtainable At Present
 

POKEMON CENTER NAGOYA Commemorative RIBBON

Unobtainable At Present
 

POKEMON CENTER NY Commemorative RIBBON

Unobtainable At Present
 

Summer Holidays RIBBON

Unobtainable At Present
 

Winter Holidays RIBBON

Unobtainable At Present
 

Spring Holidays RIBBON

Unobtainable At Present
 

Evergreen Holidays RIBBON

Unobtainable At Present
 

Special Holidays RIBBON

Unobtainable At Present
 

Hard Worker RIBBON

Unobtainable At Present
 

Lots of Friends RIBBON

Unobtainable At Present
 

Full of Energy RIBBON

Unobtainable At Present
 

A Commemorative RIBBON for a loved POKéMON

Unobtainable At Present
 

 
All Content is ©Copyright of Serebii.net 1999-2013.
Pokémon And All Respective Names are Trademark & © of Nintendo 1996-2013