I always love this game. Pretty tricky putting Blythe Danner and Ben Stiller in there and having four actors who have all appeared in the same movie. Anyway, with liberal use of IMDB . . .
First grouping of actors and the 9 movies they are in
[spoiler]
Gillian Anderson
Blythe Danner
Martin Landau
The X-Files Movie
Jennifer Aniston
Jason Bonham
Jason Flemyng
Rock Star
Nicolas Cage
Rosie Perez
Stanley Tucci
It Could Happen to You
Johnny Depp
Leonardo DiCaprio
Crispin Glover
What’s Eating Gilbert Grape
Laura Dern
Estelle Getty
Eric Stoltz
Mask
Denholm Elliott
Harrison Ford
John Rhys-Davies
Raiders of the Lost Ark
Heather Graham
Julianne Moore
Burt Reynolds
Boogie Nights
William H. Macy
Paul Reubens
Ben Stiller
Mystery Men
Kevin Spacey
Benicio Del Toro
Frank Whaley
Swimming with Sharks[/spoiler]
The extra actors in those 9 movies
The X-Files - David Duchovny
Rock Star - Mark Wahlberg
It Could Happen to You - Seymour Cassell (serious cheating on this one; i recognize him from this movie, but had no idea what his name was or that he was in the movie for the next round)
What’s Eating Gilbert Grape - Juliet Lewis
Mask - Cher
Raiders of the Lost Ark - Karen Allen
Boogie Nights - John C. Reilly
Mystery Men - Greg Kinnear
Swimming with Sharks - Michelle Forbes
Second grouping of actors and the 3 movies they are in
[spoiler]
David Duchovny
Juliet Lewis
Michelle Forbes
Kalifornia
Mark Wahlberg
Karen Allen
John C. Reilly
The Perfect Storm
Seymour Cassell
Cher
Greg Kinnear
Stuck on You [/spoiler]
And finally, the extra actors for those 3 movies and the movie they were in together
[spoiler]
Kalifornia - Brad Pitt
The Perfect Storm - George Clooney
Stuck on You - Matt Damon
Ocean’s 11 (12 and 13) [/spoiler]