I managed to jump on for 15 minutes this morning (working from home) and it was glorious.
The pain of seeing new spells, but not being able to afford to train them. Trainers actually being relevant again!
My quiver and arrows were back (Yes I'm a hunter - deal with it! ;))
Getting Mark of the wild buff from a a player running past.
Not knowing where the quests were.
Red mobs in the starting area again! People talking in general.
Why didn't I take a few days holiday? I haven't played retail for a couple of years now, but got a month to check out Classic and was taken right back!!!