Michael J. Fox (he's been a mouse twice, too!)
time traveler x3 - Back to the Future I, II, III
dog x2 - Incredible Journey I & II
Tie to Michael J. Fox - 1989-1994
Real-life British party girl
Real-life author
Roommate
Assassin
Waitress
Bridget Fonda
waitress-It could happen to you
assassin-Point of no Return
author-Frankenstein Unbound
party girl-Scandal
roomate-Single White female
tie to Bridget Fonda
1995-1997
psychiatrist
astronaut
tv weatherman
oceanographer
Bill Paxton
psychiatrist - Evening Star
astronaut - Apollo 13
tv weatherman - Twister
oceanographer - Titanic
Sorry for the delay. I'm heading out soon, so have a great weekend!
Tie to Bill Paxton - 1991-2002
Cyborg
Secret agent
Scientist
U.S. Marshal
Ex-cop
Mac: These all fit Arnold Schwarzenegger, except, I can't find one for 2002. But here goes:
Cyborg - Terminator 2 - Judgment Day
Secret Agent - True Lies
Scientist - Junior
U.S. Marshall - Eraser
Ex-cop - End of Days
I forgive you, Mac.

tie to Arnie (1986-1996)
A Journalist's Disc Jockey buddy
A Detective with a "Drug sniffer" partner
Gypsy
Homeless scam artist
A Mall Santa
James Belushi
gypsy-Masters of Menace
mall santa-Jingle all the Way
cop with drug dog-K-0
homeless person-Curly Sue
disc jockey-????????????????????
disk jockey - About Last Night?