It was fun, good acting, lots of action. I'm not the biggest Sherlock fan however, but it was good. It will be interesting to see what they come up with in the sequel.
I'm pretty sure there will be one, there's plenty of Holmes material to draw from, and Robert Downey Jr is really huge right now, so franchise potential is pretty good.
Wow, I really enjoyed it, felt like a pretty faithful adaptation of the cartoon. There were some things I would have like to be different, but mostly it was a really fun summer sci-fi adventure!