Sushi Brokers is a staple in my portfolio. They have a great happy hour with discounts on select sushi and beverages, and it can accommodate many different sizes of groups. This fallback place is great for unwinding with co-workers, meeting up with friends or even getting a bite to eat on a Friday night date. The "oh I love this song!" music alone can help to perk me up and start out a night the right way!
The sushi is very good -- may not be the best I have ever had but it definitely hits the spot and the fun, lowkey-but-energetic atmosphere is what keeps me coming back over and over. One caution, the martinis tend to be a bit heavy on the juice and light on the vodka, so go with beer/wine if you're like me and can't handle the fruity drinks.