I'm interested in compiling a list of BYO restaurants in Austin. For the most part, I tend to focus on BBQ, Tex-Mex, Chinese, and Texas-style (CFS, etc.) restaurants in Austin. And more than anything, I cook at home. But when I do visit upscale restaurants, I like to BYO, if possible.
The following all allow BYO for a corkage fee and have a good attitude about it. Not all have decent stemware, though. And the cooking at all of them is variable.
Driskill Grill (this was a couple yrs ago and I got the impression it might've been an exception)
Aquarelle once told me I could if it was a special occasion
The Hoffbrau allows BYO for $5 or something, which can be fun