ISO:Friday Happy Hour in Ann Arbor
Ashleys has a great beer selection and decent munchies
Old Town is just a great bar in general and the spot for locals
The Den is Grizzly Peak's bar spot, as opposed to a restaurant atmosphere
The Earle has great happy hour deals and upscale munchies
If you're feeling adventurous, head out to Sidetrack in Ypsi, where it will probably be a lot less crowded than Ann Arbor on Friday after work. They have an awesome beer selection, terrific munchies and a very laid back atmosphere.
If you go to 5th quarter, let us know how it was!
Further observations: At Ashley's you'll be with the college kids--potentially an advantage or a disadvantage, depending on your outlook.
Every time I've been to the Sidetrack lately at peak hours it's been packed. It is quite good, however, and has some great local beers and burgers.
They have also gone nonsmoking until 10 p.m. The same can't be said of the Old Town, which is smoky even in nonsmoking sections. There is, however, a picture of Franz Schubert on the wall, which gives you an idea of how long it's been the townie hangout.
A new choice: Guy Hollerin's at the Holiday Inn at Plymouth and U.S. 23. An ordinary hotel bar/restaurant, but they've started having live blues bands, and I think some of them are specifically at Friday happy hour. The place is nicely laid out so that you can dance, listen, or talk depending on what you want.