WALKER, TEXAS RANGER. BtVS Intertext/Allusion.
In "The Zeppo," the newly resurrected Bob has a very important question for his friend Jack O'Toole:
Bob: How long I been down?
Jack: Eight months. I had to wait till the stars aligned.
Bob: Oh, eight months. I got some catching up to do. He stops in his tracks and points at Jack.
Bob: Whoa! Walker, Texas Ranger. You been taping 'em?
Jack: Every ep.
Walker, Texas Ranger was a quite terrible but long running (1993-2001) action television series starring Chuck Norris about a Texas law enforcement officer who uses martial arts to vanquish criminals.