Had a triple battle earlier today to remind myself of Gogoat's awesomeness.
I love how my opponent seemed to just dismiss Gogoat at first, only realising it was actually a threat after it started devouring her team. She made an ill-fated attempt to stop it, at first by switching in Rotom which got OHKOed on the switch, then with Blastoise's Ice Beam which took off roughly a quarter of Gogoat's HP. Gogoat then ate Azumarill, then Blastoise on the following turn, before turning its sights on my opponent's last remaining Pokémon, Ferrothorn.
This is where I forgot that my Gogoat isn't actually Choiced, and made the battle drag on way too long by trying to take out Ferrothorn with Horn Leech when I could've just used Brick Break. Derp. At least I still had Mega Manectric in reserve to Flamethrower it after the rain ended.
Does anyone else have any Pokémon they like to use that people tend to underestimate?