Leonard Nimoy guest starred briefly as 'William Bell.' Hell, if I have to remind you who Leonard Nimoy is, then I'm not sure there's any hope. He was 'Mr. Spock' in the original Star Trek series and it simply took off from there till he showed up in the most recent Star Trek movie. He was also the voice of 'Galvatron' the 1986 animated The Transformers: The Movie.
Tony Hale guest starred as 'Steve'. Recently, he's been starring as 'Emmett Milbarge,' the assistant manager at the Buy More on Chuck.
![Tony Hale as 'Emmett' on Chuck [click for more on TVGuide.com]](https://lh3.googleusercontent.com/proxy/yB6reJX0o_uWe8WV_VVaqeX5ilon3x0sWfsUH1evZH8GJvY-eUSErlFXG6UguQCbW7I193ImlMR7tQ0GboPABMANGBQ4xXLWEllpzT9um06J3nriZ9EoAVgoxmEAo053NomBWyQgxfTvUQ=s0-d "Tony Hale as 'Emmett' on Chuck [click for more on TVGuide.com]")
Dan Lauria guest starred as 'General Lee Whitworth.' If he looked familiar, then you may remember him from The Wonder Years where he played 'Jack Arnold' the dad.
![Dan Lauria then and now [click for more info from ABCNews.com]](https://lh3.googleusercontent.com/proxy/-m4kpcj9NFdSciKP0BrSNABrtP0m7fF6DNG2NcJDekJzfKaUHnwn91POgF3JqGJvwgJqr0dAGNMNaqJUaigMvft4VGVUm9EPOhGjG-9nldA=s0-d "Dan Lauria then and now [click for more info from ABCNews.com]")
Mark Pellegrino guest starred as the finally-revealed 'Jacob.' Dexter fans may recognize him as 'Paul Bennett,' Rita's ex-husband. In 2008, he stayed pretty busy guest starring briefly in Knight Rider, Chuck, Prison Break, and Criminal Minds.
![Mark Pellegrino [click to enlarge]](http://i602.photobucket.com/albums/tt102/Dezdemona/dn8xswjh19_mark_pellegrino_ss_2470.jpg "Mark Pellegrino [click to enlarge]")
![Mark Pellegrino as 'Paul' in jail talking with 'Rita' (Julie Benz) on Dexter [click to enlarge]](http://i263.photobucket.com/albums/ii155/dexter-morgan/Screencaps/Dexter_Season_1/1x11_Truth_Be_Told/111534.jpg "Mark Pellegrino as 'Paul' in jail talking with 'Rita' (Julie Benz) on Dexter [click to enlarge]")
William Mapother guest starred as 'Agent Chris Franco.' He was 'Ethan Rom' on LOST.
!['Ethan' with 'Claire' on LOST [click to enlarge]](http://i49.photobucket.com/albums/f284/shimmybear/ethanrom.jpg "'Ethan' with 'Claire' on LOST [click to enlarge]")
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Note: Since most shows had their season finales this past week and there aren't many left, don't be surprised if this post is inconsistently posted until shows return regularly in the fall.
