'The Island' with Ewan McGreggor and Steve Buschemi.
It's funny because every time the camera cuts back to him the wax switches between small blobs and big ones, clearly a bit of a continuity fluff. Lava Lamps aren't great for continuity!
Only fools and horses series 7. The lamp is in each episode throughout series 7 about half way through this link.
Gosh where to start? My favourite lava lamps have to be the ones spotted in the first few seasons of Buffy The Vampire slayer, The Club "The Bronze" has them all over the place, and I often thought how cool a place it would be... lol.
Saw this Lego Volkswagen Camper Van video and wanted to share. Not on TV, but another good example of the iconic nature of the lava lamp. See at about 5:10 in the video for the quick appearance!
Celebrity Cash in the Attic (Charity version of the show where people sell off their stuff to raise cash).
The Celeb, Joe Pasquale (UK Comedian and all round entertainer) had two lovely shiny Astros in full flow in his pad. Clear Red and Green/Green or similar.August 2011
Mike Rowe on QVC: