My daughter (3.5) loves "Lazy Town" on Nick. It is pretty cute with good lessons, such as get up and play, eat right, get enough sleep, etc. It has songs that Lexy can't stop singing. (Thank goodness she sings very well.)
My mother's new favorite is "Crafters Coast to Coast" on HGTV. It's very interesting and fast-paced, for a how-to show.
My husband's favorite shows are "Best Week Ever" on VH1 and "Reno 911" on Comedy Central. Both shows crack us up!
I love every show I just mentioned - and too many more. I just don't have the time to watch them!