Gif Central boasts hundreds of funny animated gifs. Only the best of the best make it onto this site, with most of them having an accompanying source. No tumblr-esque one-second-long disappointments. No obscure titles or descriptions.
A gif of X-Factor talent judge Simon Cowell looking pleasantly surprised, which is an unusual thing to say the least. This would be a perfect "everything went better than expected" reaction face to use.