It really depends of how long have you been here.

Sure, Ka-pi has named a few good ones, and impertinence has added a couple more, but to me any list would be incomplete without Soriku and leo-j, although the new guys haven't seen much of them.

CrazzyMan was also funny, and memorable =)

Vivster, the one and only.

What about RubangB himself?

Also, the watchmaker

mZuzek is probably one of the most memorable users on this site, especially with all those Rocket Raccoon themed avatars. Happy birthday bro ^_^. There are also a ton of other users who I consider memorable, infact for every single user who've I've ever atleast talked to ounce, I'l always have some sort of story which will always remain in my mind about that user

Ka-pis list is pretty exhaustive and a lot of the people still missing from that list have posted in this thread themselves, so I agree with all that. Two very memorable ones to add are/were tamron and tachikoma. I loved tachis technical insight, and as someone who goes by avatars to tell users apart alot I thought they were the same person for the longest time.

It's obviously me

John Lucas
Toast boy
Spurgeonryan
Jizzbeardthepirate
Secce

Plus a lot off ninety fans who pop up where I...lurk? Like curl6 and skulkwalker

I remember avatars rather then names though

You've only posted 84 times since you joined. I don't even know you. Lolz.

Of those not listed, stof, Norlead, and Sherlock99 come to mind. Miss them all.

Also Amp316 is still around, but he's really cool too. 

But those 84 times were epic!! Maybe