Probably doesn't apply to a lot of people here but the PC version of NBA 2k12 has some nice mods.
This one adds the following historical teams. Very fun to play with Barkley. It also replaces the fake players from the legend teams with the real players.
• 2010-2011 Dallas Mavericks
• 2008-2009 Orlando Magic
• 2008-2009 Houston Rockets
• 2007-2008 Boston Celtics
• 2007-2008 Seattle SuperSonics
• 2006-2007 Phoenix Suns
• 2006-2007 Denver Nuggets
• 2005-2006 Miami Heat
• 2003-2004 Detroit Pistons
• 2003-2004 Los Angeles Lakers
• 2003-2004 Minnesota Timberwolves
• 2002-2003 San Antonio Spurs
• 2002-2003 Washington Wizards
• 2001-2002 New Jersey Nets
• 2000-2001 Philadelphia 76ers
• 1999-2000 Los Angeles Lakers
• 1999-2000 Portland Trailblazers
• 1999-2000 Indiana Pacers
• 1999-2000 Toronto Raptors
• 1998-1999 New York Knicks
• 1997-1998 Minnesota Timberwolves
• 1997-1998 Indiana Pacers
• 1996-1997 Detroit Pistons
• 1996-1997 Houston Rockets
• 1996-1997 Chicago Bulls
• 1996-1997 Charlotte Hornets
• 1996-1997 Miami Heat
• 1992-1993 New Jersey Nets
• 1992-1993 Phoenix Suns
• 1992 Dream Team
http://forums.nba-live.com/downloads.php?view=detail&df_id=2600This one adds a bunch of portraits
http://forums.nba-live.com/downloads.php?view=detail&df_id=2599