Hmm my initial response is to say all that I have on dvd (hey I didn't get it on dvd just cause I had to much shelf space to waste
).
But hmm Sailormoon (maybe my Live Action more so).
Ranma (stuff remains funny).
Urusei Yatsura (it's great slapstick after all).
Air TV (so that I can cry to it all over again).
Oh My Goddess (mainly the first OAV set).
Love Hina (again, great laughs).
Tenchi Muyo (OAV set).
Slayers (great comedy).
Nadesico (great comedy)
Full Metal Panic (great comedy)
I'm noticing a trend here, I tend to like reasonably finite series with a great comical story involving a strong male character with Tenchi syndrome.
I think some of the anime that has had the biggest impact on me has been the one season stuff (13 or 26 shows).
Bubble Gum Crisis 2040 was superb.
Tokyo Underground
Blue Gender
I've watched a lot of stuff made in the last couple of years that I have only had the pleasure of in proto dvd form though.
I usually only watch a sub once. I might get it in dub in time and rewatch it a few times.
I'd love to buy a copy of Kasimasi Boy Meets Girl. I've not seen a better romance anime in a long time.
I've found I will avoid re watching a series if it's overly long. If I can't watch all of it in a short timespan, I tend to not bother starting.
Anime, one of the few things about the internet that doesn't make me hate the internet.