I never noticed it until I was watching EPI the other night on Fox but:
Yoda has Elvis sideburns!
When Qui-Gon presented Anakin to the Jedi Council, Yoda is in profile (around the time Mace Windu's line: "The Code forbids it") and you get a good look at Yoda's 'burns. Definitely a throwback to 1977!
.....he's just a hunka hunka burnin' love.....