I'm playing on the PS3, so I don't have any of the DLC yet. I really enjoy this game but I've already played through all of the marked quests (since I have all of the quest related trophies) about five times with characters branching out in different directions both combat and karma wise.

On my current character I've followed the main quest up to "Take it Back!" and once again done all of the marked quests. Though I haven't explored all of the locations yet (didn't take the Explorer perk either), when I do explore I just keep discovering places with a few Raiders or Super Mutants and no one to talk to or interact with.

One of my favorite unmarked quests were Andale, that whole setting really creeped me out. You just knew something was wrong there considering how nice they were trying to be! I've found the flying saucer (even dragged the Alien corpse to the Megaton entrance where he sits and stares at Deputy Weld), was lucky enough to see the Firelance drop and find a ton of ammo for it...

Are there any cool places to see, experience, or otherwise people to interact with that I can influence somehow? More unmarked quests either for unique weapons or armor or memorable events like Andale (however short).

I mean, I'll keep exploring, but for every empty building that looks the same as everywhere else I've been to my motivation drops a little. I want to keep my interest in Fallout 3 alive at least until I get my first DLC pack.

Can anyone point me in the right direction? =)

All I can think of is going to the Fallout wiki, The Vault, and searching through unmarked quests.

You should go find the crashed UFO

@pornstorestiffi:
Probably because I called it a flying saucer =P

@SlowHands:
I've been looking at that wiki page (thanks!) and it seems I'm out of luck. I'm not too interested in marrying Angela and Diego, for example - most of the interesting unmarked quests I've already seen. I suppose I'll have to wait for some DLC action, instead...or maybe look for that "Fcuk You!" door =)

Dont worry, you'll be getting the DLC soon enough my friend

Dunwhich building

If I subtract the 10-15 hours I got out of the combined DLC, I have 150 hours of game time spent on a single character.  And I still haven't went back to play different karma characters.  If you've already exceeded this number then you should prob. wait for the DLC for fear of burning yourself out anyway, heh.

Wait, you dragged the alien all the way to MEGATON?
Dude...