Your Personal Favourite Top 10 Heel Turns in Wrestling!

These come to mind.

Worst Heel Turns:
Austin at WM17 - people didn't want to boo Austin yet. Less than a year later they were turning him back.
Sting in 1999 - same as above, people didn't want to boo Sting. It was like 4 months later they turned him back babyface.
Tatanka in 1994 - didn't really do anything for him, they should have turned Lex Luger heel and returned him to his Total Package/Narcissist gimmick.
Jim Duggan in WCW - just didn't seem right him not being for the USA.
Demolition in 1990 - just came off a great babyface run and could have been big but they turned them quickly and jobbed them out too soon.
Road Warriors in 1988 - same as Austin and Sting, didn't seem like people wanted to hate these guys at that time.

Best Face Turns:
Steve Austin at WM13 - fans were ready to start cheering him, after this turn he became the biggest star in wrestling.
Randy Savage in 1987 - was a white-hot heel and then became the 2nd biggest babyface in the company. He had a great run as WWF champion.
Andre the Giant at WM6 - it was a nice send off for him. Didn't really do anything for him but it was nice that he ended his WWF career with a standing ovation.
Mr. Perfect in 1992/93 - it was nice to see him get another run, fans really took to him, too bad it was short because of injuries. 
Paul Orndorff after WM1 - he really got over strong, had a nice run, and it set him up for a great run with Hogan when he turned on him.
Roddy Piper in 1986/87 - like Savage, he was a white-hot heel who got over huge as a babyface.
Demolition at SSE 88 - turned them into the biggest/most popular tag team in the company.