Guess I'm gonna have to "go against the grain" with you guys on this. Because I friggin LOVE the combo of a fresh BeerRita!!!
The key is NOT letting it get all melty. But think about this for a second... If you like Lime/Lemon in your beer (which I do) and you like Tequila, the flavors are very complimentary IMO! I have one at least once a month and more during the Summer.
Here's one from one of favorite spots:
