One of my sites gained over 100 uniques a day, my previous high was 96, yesterday it hit 179. saw 4 keywords that I was in the top 10 for, jump an average of 3 spots higher. Today I noticed some other large jumps for keywords on the same site:
36->18
31->19
48->24
47->28
I did notice though that I had some new sites that I was hoping would come out of the sandbox soon, who looked like they were starting to crawl out ( a few keywords sitting in the 70s-90s) all dissapeared (dropped out of top 100). It doesnt really make any sense because all 3 sites, none had any backlinks at all yet, none were spun content or anything like that. All quality sites, so im assuming they may have tweaked something with the sandbox also.
Either way, what I have noticed with Panda and Penguin both, is that if you give google what they are looking for, these updates help you not hurt you.