HDTV Listings for April 10, 2010

What we're watching tonight:

• Fox (720p) presents NASCAR Sprint Cup Series @ Phoenix at 7 p.m.
• Syfy (1080i) airs Mega Piranha at 9 p.m.
• Ion (1080i) has The Guard at 9 & 10 p.m.
• HBO (1080i) has the season premiere of 24/7: Mayweather/Mosley at 10 p.m.
• NBC (1080i) has Saturday Night Live with Tina Fey at 11:29 p.m.
• ESPN (720p) has NCAA Frozen Four hockey with Boston College/Wisconsin at 7 p.m.