I have a Spiritomb. My friend and I just sat down in a Denny's sipping hot chocolate and entered the underground, talked to eachother, and left the underground 32 times in about 20 minutes. Easy. Did I mention that he and I, when we first started, went around and got all the starter pokemon for eachother? That took like an hour, though. It was a lot of busy work, and it was hard to do it when we were so excited to actually play the game.
As for turtwigs, I got lucky. My starter turtwig is a female, which means eventually I'll be breeding them (I'm focused on the actual game right now, though). When that happens I'll be happy to hand them out to you folks.