On a forum I visit, people have been doing this thing called "Pokemutations". You get two random numbers between 1 and 493, and then find the pokemon graphics matching the D/P National Dex. and splice them together. After 6 tries, this is what I came up with:

Shellder + Wigglytuff



Foretress + Skorupi



Exeggutor + Mantyke



Kingdra + Larvitar



Squirtle + Walrein



Toxicroak + Wooper



Yeah, I was too lazy to import them into a GIF program to make the backgrounds transparent. This killed a good 45 minutes, though.