Agreed with the burnout sentiments. This happened to me early on as I caned skyrim and got bored. So I put it back on the shelf for a while and finished off New Vegas and all it's DLC, and played a lot of Forza 4.

Then i put skyrim back in and it was fun again - finished off what I wanted to do with my Orc killing machine and started my current playthrough with Talara the high elf magic assassin. Gonna make a sneaky archer bosmer next!

as most others have said go try a new game.

Kingdoms of Amalur
Witcher 2
Dark Souls
Fallout 3 or NV

any of the above are pretty entertaining, can be found used for cheap (except maybe witcher 2) and will act as a nice changeup. i've been playing a lot of Amalur and Fallout 3 lately and only occasionally pop in skyrim anymore

DosBox Arena

i got my mojo back lol playing again reason for playing i went outside took a deep breath herd a gunshot down the street and said in caps WELL BACK TO SKYRIM