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.
This is animated gif of the NASA celebration after the Mars Rover had successfully landed. This can be used as a reaction gif for whenever you're happy for the achievements of somebody else. Example: Seeing your friend score with a girl.