I played Gankplank during the bilgewater event where you had to play a game as gangplank to get the skin.
I grabbed gangplank as fast as possible and then everyone called every lane but jungle.
I was like, "GANKPLANK TIME"
After my first clear (which was super easy due to oranges) I ran right into top lane and ulted midlane and got a double kill.
The team handily won top and bottom lanes without help, so I spent about 20 minutes counterganking mid, getting superfed. I had like no silver doubloons by the end of the game but we systematically destroyed the enemy team with consistent firepower pushing them back, and the rest of the team's poke just made my ult that much scarier, because the enemies couldn't stand and fight and couldn't run away.
The enemy team must have love/hated me because I was roleplaying throughout the game. Every ult came pre-announced as a "YARRRRRRRRRRRRRR!"
Ahem.
But to stay on topic, Blitzcrank in that game called himself Yankplank and joined the crew, playing along.