"This is All That. This is All That. Now this is just an introduction before I blow ya mind..."That's right guys, Nickelodeon is indulging us with a very epic reunion. The Splat , the late-night network on TeenNick that plays all the '90s childhood heavy hitters like Rugrats, CatDog, and Hey Arnold, announced in March that there will be an All That reunion. Here's what we know so far.Sometime in April. The show's first episode air date was April 16, 1994, so I would put some money on it happening that weekend.Kel Mitchell, Kenan Thompson, Lori Beth Denberg, Josh Server, and Danny Tamberelli will definitely be there. And we would venture to guess that a couple of surprise guests will make an appearance, too.It's the show's 22nd anniversary this April! Time flies. The Loud Librarian , and Good Burger I sure hope so.