HDTV Listings for May 20, 2011

What we're watching tonight:

• CW (1080i) has the season finale of Supernatural at 8 & 9 p.m.

• NBC (1080i) has Friday Night Lights at 8 p.m.

• CBS (1080i) has Flashpoint at 8 p.m.

• ABC (720p) has the season finale of Primetime at 9 p.m. and 20/20 at 10 p.m.

• Syfy (1080i) has WWE Smackdown at 8 p.m. and Urban Legends at 10 p.m.

• Discovery (1080i) has Dual Survival at 9 p.m. and Swamp Brothers at 10 & 10:30 p.m.

• TLC (1080i) has Say Yes to the Dress at 9 p.m. and Four Weddings at 10 p.m.

• Starz (1080i) has Camelot at 10 p.m.

• History (720p) has American Restoration at 10 p.m.

• HBO (1080i) has Real Time with Bill Maher at 10 p.m.

• Versus (1080i) has NHL Playoffs action with Canucks/Sharks at 9 p.m.

• ESPN (720p) has Western Michigan/Michigan NCAA softball at 7 p.m.

• ESPN2 (720p) has Friday Night Fights at 9 p.m.