I haven't even played it yet. Is it good? I didn't really enjoy Oblivion. It was the combat that I disliked most, and I understand it's still pretty janky in Skyrim. After playing Demon's/Dark Souls and Dragon's Dogma, I don't think I can go back to a shitty weightless combat system.
Well...
IMO the cities in Oblivion had more personality. Just the overall side missions and writing was a lot better. This isn't to say Oblivion was great, I do agree it had a ton of issues (terrible animation, over used voice acting, too many NPCs sharing the same face, wonky combat, problematic level up system). Still, despite those hurdles, I always thought Oblivion just had some really great missions. And it had personality.
Skyrim on the other hand, the world is much bigger. I mean it's crazy big (I'm talking sprawling land, with a lot of detail. Very naturesque, and you could spend your entire time playing it, and never having seen all of the land, it's that big). The combat is still wonky, but not as bad as Oblivion. But ultimately, with the great expansion with Skyrim's world, it just fell hollow to me. I never got a sense that each town had its own lively personality. Felt just like extensions to me. And I really really thought the guild missions in oblivion were much better.
So to answer your question, it depends on what you want from the game. I mean, if you want a really amazing world to explore, I'd say it's worth a shot. But I just didn't find the actual missions to be all that great. But there is a lot of things Skyrim does better than its predecessor, no doubt.