By my count:
There were 72 BCS games played.
Only 51 schools sent a team to a BCS game. TCU of course was one of those schools.
Only 32 teams won a BCS game. TCU won the 2011 Rose Bowl.
Only 30 schools sent a team to two or more BCS games. TCU played in the 2011 Rose Bowl and the 2010 Fiesta Bowl.
Only 5 non-AQ schools sent a team to a BCS game. Joining TCU was Boise State, Utah, Hawaii, and Northern Illinois. Only 3 - BSU, Utah and TCU - made it to more than one BCS game.
Of the non-AQ schools to play in a BCS game, TCU and Utah tied for the highest AP ranking (#2) at the end of the season, although TCU was also ranked #2 in the Coaches Poll while Utah finished at #4.
Only 4 Texas universities sent a team to a BCS game: Texas (4); TCU (2); Baylor (1); Texas A&M (1).
Make of this what you will, but don't ever let anyone downplay the significance of what TCU accomplished during the BCS era.