A non-exhaustive list for meme-ish purposes:

Major Fandoms

Merlin
Yami no Matsuei
Starsky and Hutch

Minor Fandoms

Due South
Man from UNCLE
Merlin RPS
The Professionals
Supernatural
Star Wars (Original Trilogy)

You Can Try But No Guarantees

Saiyuki
The Sentinel
SGA
X-files
X-men