So here's who's been through the PCTV studios so far that you might recognize:

Stanley Tucci - super friendly
Matthew Perry - could he HAVE a more dry wit?
Lauren Graham - really chipper and funny
Jason Patric - working the beard wonderfully
Maria Bello - amazingly beautiful
Woody Harrelson - so exhausted he took a nap on the couch
Emily Mortimer - adorable
Saffron Burrows - stunning features

Still to come:
Jason Ritter
Jacqueline Bisset
Kathy Mattea
Phylicia Rashad
Sanaa Lathan
Michael Rapaport
Dennis Hopper
Michael Madsen
Eric Balfour
Leonor Varella