How did I just figure this out?? The Mary Tyler Moore Show is on Hulu! I got hooked a few weekends ago when they showed the very first episode on the Hallmark channel. Unfortunately I couldn't sit and watch the marathon all day, but I happened across the series on Hulu and was delighted!
It's not as amazing as the Dick Van Dyke Show (my FAVORITE), but it is fun to watch! Hope you enjoy!