I don't really watch much of Lucky Star because it doesn't have BURNING SPIRIT or sexy witches or anything like that. But man if I can't help smiling at a Getter Robo reference that involves drills. With Gurren Lagann renewing interest in drill mecha, I thought it might be wise to upload a clip about...dentistry, and why men like going to the dentist.
The part near the end with the nurse and the spaceship is a parody of the original Gunbuster. There's even a bit of Gainax bounce in there! Ah, Gainax bounce, it's good to see you again.
As far as I know Lucky Star is unlicensed in the United States, but if it does get licensed, please support your local anime distribution companies!