I came across this roundup of bars in Hollywood and east when I was looking for links in the MyLA post. It is a kinda fun read and covers most of the bases. Here is the review of 4100:

We went to this bar on like, Thursday. Maybe it was Wednesday or Tuesday. Anyways, the point is, is that there was an unusually high number of females there. The interior design is all “magic-carpet” style. All of a sudden, we were surrounded by intoxicated ladies. It was like our own harem. It was great.

It is, however, a bit outdated. I know at least Lava Lounge and Star Shoes have closed and where is Cha Cha? Anyway, have a look and post your score. I’ve been to 17 of 30.

Link