Like this recent trip to Industrial Light and Magic:
You'll note that Conan's 30 seconds as a CGI-rendered alien is more entertaining than
If making fun of nerds isn't your thing, try this one, where he invades a group of 1864-rules baseball recreationists:
His interactions with the widow are priceless.
And, yes, I don't really know how the baseball one is that far removed from making fun of nerds.