Which simpsons episode? - please help!

[crespo9]

I was watchin a simpsons episode the other day and it involved the policemen (wigham, lou etc) walking through the woods and lou stops and looks up and says "oh ...my... gooood"

I've never laughed as hard! and really want to know which episode it was so i can find it and watch it again. Any ideas?

[Metz]

any more clues as to what was in the episode?

[mcpaula]

wud it happen to be the one where mr burns appears in the woods as an alien coz of his exposure to nuclear energy from the plant and he has to get injections and leaves the hospital in a state of limbo?? everyone in springfield thinks he's an alien. prob not but that one came to mind!!