It's Baltimore against the Great North Country all night, as the Orioles and CFL Football Club are both in action in Canada. One of the great comedy sitcom episodes of all time is also on view on cable.
* "Inside Maryland" (7:30-8 p.m., MPT, Channels 22, 67) -- The weekly news magazine of regional affairs includes an interview by reporter Annette Gibbs Davis with urban planner James Rouse, designer of Baltimore's Harborplace. Why? The once-controversial waterside development is marking its 15th anniversary this year. MPT.
* "Orioles Baseball" (7:30 p.m.-10:30 p.m., WNUV, Channel 54) -- The Orioles serve as a warm-up act for football, taking on the Toronto Blue Jays from SkyDome.
* "Baltimore CFLs Football" (10:30 p.m.-1:30 a.m., WNUV, Channel 54) -- The local team that went to the Gray Cup championship game in its inaugural year opens the regular season against the British Columbia Lions, in Vancouver.
* "Evening At Pops" (9 p.m.-10 p.m., MPT, Channels 22, 67) -- Punning music parodist Peter Schickele and violin virtuoso Itzhak Perlman join Boston Pops conductor John Williams, and even play a double violin concerto together. PBS.
* "20/20" (10 p.m.-11 p.m., WMAR, Channel 2) -- Correspondent Lynn Sherr updates a 1994 installment with a Maryland angle: the case of a St. Mary's County girl who accused her father of sexual abuse, but later retracted the allegations as false recovered memories. ABC.
* "Free Willy" (5 p.m.-7 p.m., HBO) -- Despite a well-known ending, the 1993 hit movie still generates excitement as it tells a sweet tale that has as much to do with the rescue of a young boy as it does with a killer whale. James Jason Richter is the boy who bonds with a captive Orca, and Lori Petty and Michael Madsen are the adults who come to share his concern.
* "Investigative Reports" (9 p.m.-10 p.m., A&E; Network) -- Host Bill Kurtis takes up the trail of the Ebola virus, first identified in 1967, which took a high death toll in Zaire recently. The show includes a visit to a classified U.S. Army Medical Research Institute in Maryland.
* "I Love Lucy" (9 p.m.-9:30 p.m., Nick At Nite) -- When Lucille Ball died in 1989, the clip-filled tributes to her inspired physical comedy all included a scene from this episode. Remember? On tour with Ricky (Desi Arnaz) in Italy, she tries to break into film by pretending to be a worker in a winery.