The MAT is good, but the OSU area in the bar has dwindled; the previous owner (an OSU grad) sold the bar to Big Al (a local radio DJ) who has no OSU affiliation. The bar will be crowded - but most could care less about OSU. Also, TCU and Baylor fans might not be that affectionate to our cause.
Austin Avenue Sports Bar has a good club. Reason being, the entire first floor is dedicated to OSU. So, every TV, table, fan is OSU. They also raffle off some good memorabilia during halftime. The crowd is a little older than the MAT though.
If you find yourself in Fort Worth, Sherlocks has a pretty decent club.
Hope this helps,