This is a video edit from Eclectic Method of all R2-D2's beeps and boops given subtitles from the six existing Star Wars movies. Honestly, I excepted a little more, but it did not deliver. Kind of like a Geekologie article -- you win some and you lose some. Unless you're me, in which case you forget your wallet in the cab on the way to the casino and don't even get to play or hit the all-you-can-eat buffet.
Keep going for the video.
Thanks to Thomas W, who's convinced R2-D2 can speak, he just chooses not to.