LVL 100 Dragonite @ dragon claw
thunder
rain dance
outrage
surf
from lvl 5 dratini, pain in the rear to train it, but worth it. reason why i used the raindance/thunder vs. the thunderbolt is that most cases that you would opt to use thunderbolt would take 2 turns to cause opponent to faint anyways, seeing as dragonite doesnt have the same type bonus. also, using rain dance, i can opt to use thunder repeatedly, and it wont miss.
alot of pokemon that other people use that you would actually use electric moves against have high sp. def, so thunderbolt from a non-electric type is nearly never enough. if you know they can 1 hit-ko you(ie. they're going to use blizzard or ice beam), but you have first go, take the chance with thunder, because its strong enough for the 1 hit-ko against them.