Sentintal Headlihgts I believe it's called. Basically shut the car down then turn the lights off, they'll stay lit (just the headlights themselves, not the parking lights curcuit) for about 15 - 30 seconds (maybe 45? I forget), anyway, not to worry, they will kill themselves. Just because I'm paranoid I'm in the habbit of always killing the lights before I shut the car down. If you really don'pt like it, there's a fuse marked "Headlamp Delay" in your fusebox, pull that fuse and this feature will be gone. That circuit does nothing else.
Sequoia