The New Years day marathon has become a bit of a tradition, with my favorite always being all the Twilight Zone episodes on the SciFi channel. But today I've been switching back and forth between the Lions game and the two INHD channels.
INHD1 is currently running all their "Fields of Glory" episodes where the explore different sports facilities and their history, great stuff. On INHD2 they're playing all-IMAX all day, from 8 this morning till 7 tomorrow morning. So far I've explored ice caverns at the North Pole, climbed sequoias in California, surfed, played w/ sea otters and rode along in an Indy car all from the comfort of my couch.