I had a relatively good interview experience with Google. I wasn't hired but I felt that the process was fair. True, it was long and I had to invest some significant time to freshen up my algorithm skills. But overall I was left with a good impression.

I do think that Google puts too much accent on algorithms and college-level CS. I consider myself a good programmer. I created two moderately successful Micro ISVs in my free time. I contributed a huge chunk to the product at my corporate job. I get things done. However I felt that this is not what Google looks for even if the say they do.