At long last, I saw Patton Oswalt here. Totally worth the wait and line.
What to say about this place? Really, it's just a spot where you go to see someone on stage in a non-musical setting. This place was way bigger inside than I would've imagined it was from the outside and I was able to get a pretty view from the balcony. Let's be honest too, you don't really go here for the food. Their offerings are so-so, but they had a couple good dishes like the chipotle fettuccine. The downside? the service is really slow.
The space and food here aren't that special, but it's really just a spot made so that you watch someone in the front. What else could you possibly say about the Improv?
Also, the local comedians that come here suck. Don't waste your money unless they're openers for someone like Patton Oswalt.