King of the Hill - Season 4 Episode 10 -

As the year 2000 approaches, Hank becomes a believer in the Y2K bug. He tries to prepare for the millennium by eliminating modern technology, and instead of buying Peggy the new computer she wanted, he gets her an old grandfather clock. Strickland Propane closes its doors in the midst of the panic, leaving customers lined up at the door, as Hank does the unthinkable, and takes off with the only remaining Propane Tanks.