Friday on TV

NFL preseason (6 p.m., Ch. 13): Eagles at Bengals

Arena Bowl XXIII (6 p.m, NFLN): Spokane vs. Tampa Bay

Whale Wars (7 and 9 p.m., Animal Planet): The Sea Shepherds try some crazy tactics.

Eureka (7 and 9 p.m., Syfy): Carter and Grant's rivalry heats up.

Haven (8 and 10 p.m., Syfy): A woman's sketches becomes real.

Flashpoint (9 p.m., Ch. 2): A prep athlete is kidnapped and beaten.

The Pillars of the Earth (11 p.m., Starz): Waleran uses the disaster at the Kingsbridge cathedral against Prior Philip.