Eerie, Indiana to Melrose Place (2009)

Strange Luck's Chance Harper reads the Eerie, Indiana newspaper

The X-Files' Mulder is mentioned on Strange Luck by an FBI agent referencing a colleague who works on paranormal cases.

Brenda Walsh picks up a Morley smoking habit while in Paris on Beverly Hills 90210

90210 was a continuation of Beverly Hills 90210 years later

Melrose Place (2009) was a continuation of Melrose Place which was a spin off of Beverly Hills 90210 that was continued as 90210