Marc Ambinder at the Atlantic has an analysis of the Texas primary system, which is kind of a hybrid between a primary and a caucus. (Props to Frontburner for linking to this.)
It's a little confusing, but the upshot is don't write off Texas just because we have a large Latino population that should favor Clinton. Apparently the way the delegates are doled out has to do with previous election turnout, which might benefit Obama.
Oh, and forget what I said about Austin blindly falling into Hillary's arms. The Burnt Orange Report has endorsed Obama (I'm guessing they have a large student readership, so that makes sense). The party leadership in Texas seems lined up behind Clinton, but that might not make much difference in a state where the party is so weak.
We shall see. But we know who has "the big mo'" after sweeping the Potomac primaries yesterday.