Nickelodeon Doug. There is and forever shall be a bomb in the lasagna. Great Scott. D:
Hey Arnold. That was my favorite Nick show ever.
All That. And I mean the old, funny All That. With Dear Ashley, Vital Information, REPAIR-MAN-MAN-MAN-MAN-MAN-MAN-MAN. That was great. XD The newer All That they made a few years back was just weird and gross and not as funny.
I would say The Amanda Show too, but I think they still air that every now and then.
Are You Afraid of the Dark?. That show pwned Goosebumps. How come we get Goosebumps back, but not it? D:
Toonami. I want Toonami back. I don't want three episodes of Naruto and then some other crap. I want Yu Yu and Kenshin and Tenchi and Sailor Moon and Gundam and, heck, I'd even like to see DBZ back, even though I complained about them airing it as much as they did back then. And I want old Tom. That new thing is NOT TOM. >:O Old Toonami was cool.
That's all I can think of now, but there are probably more.