What we're watching tonight:
- NBC (1080i) has Stanley Cup action with Red Wings/Penguins at 8 p.m.
- ESPN HD (720p) presents Celtics/Pistons at 8:30 p.m.
- Discovery (1080i) premieres Factory Made (promising a behind the scenes look as the world's largest hi-def video screen is built) at 8 p.m.
- ABC (720p) brings back Men in Trees at 10 p.m.
- History (1080i) brings the season premiere of MonsterQuest at 9 p.m.