http://cache.gawkerassets.com/assets/images/4/2011/11/db1364f0ba92157bc5d70650057d07bf.jpg http://www.stuff.co.nz/entertainment/film/8279279/Abrams-reveals-Star-Wars-joke It's genuine, I just checked!
There is supposedly an Enterprise in Episode One, too. http://www.theforce.net/episode1/hidden/hidden_stuff_page_11.asp Looks kinda like the Enterprise-D painted black. Oh, and the Millenium Falcon was part of the fleet in First Contact, and gets about 3 frames of air time. http://eggpedia.wikia.com/wiki/Star_Trek:_First_Contact_-_Millenium_Falcon
I've just found out thanks to Forbin in the Firefly thread that Han Solo appears in every episode of Firefly. Every damn one. And I've just finished the fourth rewatch and never seen him.
I remember an article the the Star Wars Insider magazine years ago (around 2000, 2001, or so) where they were talking about easter eggs in the various SW movies. Wheoever they were talking to at ILM confirmed the Millenium Falcon was in First Contact but denied that the Enterprise, any Enterprise was in Episode 1.
In 'The Phantom Menace they had Dave Bowman's 2001 Space Pod from the ship Discovery in Watto's junk yard..