James Brown called him his idol. Mick Jagger called him the king, Elvis Presley called him the greatest. Otis Redding called him his inspiration. Muhammad Ali called him his favorite singer. Jimi Hendrix said he wanted to do with his guitar what Little Richard did with his voice.
He's been called the Architect of Rock-n-Roll, the Creator, the Emancipator, the Inventor, the True King, the Originator, the Beauty (who is still on duty!), Bronze Liberace, Georgia Peach, Human Atom Bomb, International Treasure, Living Flame, Southern Child.
I just plain, flat out think he's excellent.