American Idol premiered in 2002 and is being canceled at the end of the next season. Survivor premiered in 2000 (and is somehow on Season 30). It may well make it to 20 years.

Suge Knight, I wonder if they mean old Suge Kenobi?

Also don't forget in 2020 Amy and Rory go to Cwmtaff and wave at themselves before the adventure in The Hungry Earth.

A little off the topic
But it would have been interesting to see what Richard Pryor could have done with a few more healthy years.