In the life of a television show there are always changes. It could be the departure or addition of a cast member, a new set or shooting location, or just the aging of characters. But, those are subtle changes that many viewers just shrug off as the natural progression of a program.

Then there are those changes that are so drastic that they take viewers by surprise, making them wonder if this is the same show they watched the previous season. When these changes take place between the freshman and sophomore seasons of a show this really takes a toll on the fan base. Throughout the history of television there have been a number of shows that have seen such changes between the end of season one and the beginning of season two. After the jump you'll read about nine such examples.

Lee Goldberg blames William Simon for turning him on to YouTube, and now I'm blaming Lee Goldberg for ruining the rest of my work day.

Goldberg has started a new blog, Main Title Heaven. It's a blog filled with clips of the opening titles to various TV shows, both old and new. Not just the most popular, famous ones (though he has stuff like Magnum, P.I., I Dream of Jeannie, and the original Battlestar Galactica), but also little gems you might not think of, like Banacek, Raven, Voyage to the Bottom of the Sea, Man From Atlantis, The Magician, Seaquest, It Takes A Thief, and Mannix. He's gotta get that other version of the Flipper theme up though.

This site will suck up all of your time today and bring back a lot of memories. Hey, remember when TV shows actually had theme songs and openings?