There's a good review of the new DLC for Mass Effect 2 on the Escapist site, but here's my complaint about Lair of the Shadow Broker (at least on the XBox) - it's got bugs.
Here's what I mean. At the beginning, after the car chase mentioned in the review, you end up on a roof fighting a few waves of mercs. The fight is fine, except for one small problem: I ran this twice, and both times, the mercs stopped coming, the game stayed in combat mode, and I couldn't progress past the roof. It was bad enough that I just put the game down (which is too bad; I really liked Mass Effect 2 ).
My daughter says she's waiting for a patch before she even bothers with it. I think that's where I am, too.