I don't exactly collect them, but it's tough to pass when I come across a cool one. Here are some of my favorites, (never mind the awful patch job on the counter top)
I like that second Batman one a lot. Any hints on where to get one? I personally like the ones I made myself. A chunk on 1x2 maple lumber, a sheet metal screw, and some stain / polyurethane. I have a pretty big selection, mostly freebies from various tasting and fests. I have a couple bartender style, a nice Duvel one, and an old Budweiser one that I found as we were going through the basement in preparation for moving.
Here's some of mine ... The Oberon keychain bottle opener and the paint key next to it are great for opening bottles without damaging the bottle cap. Curled end of paint key cuts the wax on bottles as well.
Birthday gift from the wife last year. Magnets on the back keep it conveniently placed on the front of the fridge.