What are some of your favorite skins, and what are some skins you're proud to own?

My favorites are:

1. Final Boss Veigar
2. Championship Riven
3. Soulstealer Vladimir
4. Championship Thresh

and the skins I'm proud of to own are:

1. The Magnificent Twisted Fate
2. Underworld Twisted Fate
3. Alien Invader Heimerdinger

I just like these because they're either legendary/legacy, or look insanely good in-game.