Couldn't find a particular clip, so I'm starting a thread like we have for Conan and Kimmel. His appearances according to Epguides:
6/22/1982 - Harrison Ford, Ron Popeil, Susan Sheehan
14 Dec 95 - Harrison Ford, Bonnie Hunt, Bruce Springsteen
09 Jun 97 - Harrison Ford, Steven Wright, Dave Matthews Band
11 Jun 98 - Harrison Ford, Dane Cook
04 Oct 99 - Harrison Ford, David Bowie
24 Jul 00 - Harrison Ford
20 Jun 02 - Harrison Ford, ...And You Will Know Us By The Trail of Dead
12 Jun 03 - Harrison Ford, Annie Lennox
06 Feb 06 - Harrison Ford, Michael Bublé
20 May 08 - Harrison Ford, Ali Lohan, Leona Lewis
21 Jan 10 - Harrison Ford, Blind Boys of Alabama with Lou Reed
08 Nov 10 - Harrison Ford, Cee-Lo Green
21 Jul 11 - Harrison Ford, Porcelain Black
10 Apr 13 - Harrison Ford, Rita Wilson, Jake Bugg
31 Oct 13 - Harrison Ford, Halloween costumes, Holy Ghost!
6/22/1982 - Harrison Ford, Ron Popeil, Susan Sheehan
14 Dec 95 - Harrison Ford, Bonnie Hunt, Bruce Springsteen
09 Jun 97 - Harrison Ford, Steven Wright, Dave Matthews Band
11 Jun 98 - Harrison Ford, Dane Cook
04 Oct 99 - Harrison Ford, David Bowie
24 Jul 00 - Harrison Ford
20 Jun 02 - Harrison Ford, ...And You Will Know Us By The Trail of Dead
12 Jun 03 - Harrison Ford, Annie Lennox
06 Feb 06 - Harrison Ford, Michael Bublé
20 May 08 - Harrison Ford, Ali Lohan, Leona Lewis
21 Jan 10 - Harrison Ford, Blind Boys of Alabama with Lou Reed
08 Nov 10 - Harrison Ford, Cee-Lo Green
21 Jul 11 - Harrison Ford, Porcelain Black
10 Apr 13 - Harrison Ford, Rita Wilson, Jake Bugg
31 Oct 13 - Harrison Ford, Halloween costumes, Holy Ghost!