Sometimes I popup for no particular reason, like now
I recently discovered that
our old pal Clippy has successfully made the transition to character mode Unix editors:

(click image for animated movie)
That's right, you can
get your very own Clippy in the popular text-mode Unix editor VI -- a project called
Vigor.
There's also
a great Clippy parody applet you can "accidentally" install on your coworker's computers.* At periodic intervals, helpful messages will pop up, Clippy style:



All hail Clippy, the once and future king of.. er.. help!
* Not that I would know anything about that.