I got that last night when I passed 300 hours...
And has anyone got Dawnguard? I'm afraid to say I've already completed it and am now doing their Radiant Quests, which are much, much better than normal Radiant quests. I chose the Dawnguard. You get almost no advantages, except the crossbow and ARMOURED TROLLS! They're so cute, in a weird kind of a way...
Mine does 250 damage when wearing all my enchanted armour + 31 points fire damage (I added this myself) and ignores 50% of armour (you get this by doing a quest to find upgrade schematics). I called it Agdinok, which is "Burndeath" in Dragon Language 
You also get a fantastic follower, plus other random Dawnguard members.
It adds a few more locations, one of which is a Dwemer Ruin, and another is a drug den I don't know if there are more, I need to do some exploring.
Now for some spoilers;
Click here to see the hidden message (It might contain spoilers)
You know the history of the Falmer? They were Snow Elves, forced Underground by the Nords way back when they conquered Skyrim, made an "uneasy" alliance with the Dwemer, then were betrayed and blinded forever. Thus the Falmer. Well, you get to meet ACTUAL Snow Elves.
And you get a bow called Auriel's Bow, which, when using a special arrow, you can fire at the sun, and it does a Storm Call-like thing, where Sunbeams rain down, burning everyone around you.
Also, one of the Radiant Quests is someone in Fort Dawnguard (a specific character, not someone random) will tell you "your friend" has been kidnapped by Vampires, and you have to go rescue one of your followers from a random location. Sometimes, it will be your wife/husband if you're married.
And I think Bethesda may listen to fans; I fast-travelled to Whiterun, and got attacked by Vampires! INSIDE WHITERUN.
I don't know whether this is new or not, but I worked out how to control the zoom when in third person; hold down the right analog stick then use the left analog stick to control the zoom level.
I recommend Dawnguard. It's 1600 MS Points. Don't know how much for PC or PS3. OH WAIT YOU CAN'T GET IT YET!!!!! AHAHAAHAAHAHAHAHAHAHAAH!! NYEH NYEH NYEH! (sorry)
Edit: My playtime is roughly 3x the average playtime. It was 75 hours in February, so I can only assume it's gone up to, say... 110? I'm at 302.
Edit 2 (I can see where this is going... again 
) : You know the tales of The Lusty Argonian Maid? Well in Dawnguard, I've just found a book called the Sultry Argonian Bard: Vol 1
And now we can make arrows.
And I can now have two active Standing Stones. I won't say how, but it is legit, and not cheaty. It's from a quest.
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There's always a bigger fish - Qui Gon Jinn.
You shall learn that history is an intricate weaving of many events. No one thing can be understood without the proper context.
The best techniques are passed on by the survivors.
