Gimmie Shelter
Everything Went Numb
Tom Sawyer (I feel like 2112 is cheating)
Where Eagles Dare
Welcome to the Jungle (there's a reason it's overplayed)

Same for me too. I kept restarting after new patches came out to see how it changed the old stuff, finally made it to Act 3, and got overwhelmed with the size and options. It's a really difficult game for people who have trouble focusing.

It's so much better on here now. Plus, it actually looks like the timeline is in chronological order!