ok, so we've had threads on what evos should/shouldn't exist, but what about ones that already exist that are inspired choices, for instance, we all get pissed with the amount of zubat in caves and if you're doing the nuzlocke your bound to have at least a hundred million by the end of it, but with its subsequent evo to golbat (which was already pretty cool), you now get crobat, which is freaking awesome! So you can get a pokemon early on and with training and patience it can become very very good.
Any others?
Any others?