Anyone who enjoyed NPH on Dr. Horrible should check out his work on RiffTrax, riffing the original Willie Wonk and the Chocolate Factory.  He was really fun to work with and we've been trying to get him to come back and do another one, perhaps Starship Troopers (Meta!), but scheduling hasn't worked out yet.

http://www.rifftrax.com/rifftrax/willy-wonka-and-chocolate-factory

They're essentially MST3K like commentary tracks that you synch up with a movie.  This one's Neil and Mike Nelson, most of them though are Mike + Kevin Murphy and Bill Corbett who played the bots on MST3K.

-Conor @ RiffTrax