Arabic (Summer) Immersion Programs?

[DreamTeam03]

This fall, I'll be a grad student at the University of Texas this fall as an MPAff (Public Affairs) candidate. However, I also really want to learn Arabic by the time I graduate and I feel the best way to do this would be to study Arabic through an immersion program. 
I have a friend who studied at Middlebury and he loved it and I hear UT has a strong intensive (not immersive) program as well. I have also been looking into SIT, which would allow me to study overseas (which is a huge plus for me). 

Does anyone have any insight into the quality of any of these programs (especially SIT and the UT one, which I do not know much about), or is anyone aware of other strong immersive/intensive programs? Thanks!