Always had a soft spot for some of the more... unconventional designs, like Corphish and Crawdaunt, as well as Crabrawler. Off the top of my head, there's also Scolipede, Darmanitan, Psyduck, Snorlax, Lickitung, Tyranitar, Aggron, Torkoal, Garchomp, Excadrill, Seismitoad, Krookodile, Toxtricity, and Cramorant, to name a few.