For me the first hour normally reflects what I would like my character to be. In Oblivion you were able to get a 'rusty' versions of nearly every style of weapon and armour in the game, and therefore set the mould for your character.
I liked that in Oblivion you were trudging through the sewers, finally making your way to *the light at the end of the tunnel* and beginning your adventure.
What do you envision the first hour of Skyrim to be like?
For me its walking to your death, escorted by armed guards to an execution block when suddenly the whole place opens up into chaos as dragons swoop over and burn everything. DRAGONS ARE IN SKYRIM! You then have to escape the complex following http://elderscrolls.wikia.com/wiki/Esbern through a hidden entrance to caves below the keep and your eventual salvation in the forest below.
In your immediate path after leaving the caves will be an ancient ruin (similar to http://www.uesp.net/wiki/Oblivion:Vilverin) full of goblins or low level bandits and packed full of goodies and significant items that will start a few other quests.
Looking forward to reading your speculations.