Best Title screen in my opinion has to go this game, which I platinumed earlier this year in its HD Collection:
The fact that you can mess around the colors, speed, background images of it by simply pressing random buttons make it even cooler for a custom title screen.
And the best menu song has to go out to this creepy, yet subtle piece for a game I recently platinumed in HD just last week.
It's just too creepy, yet sets the incoming pace for the fight ahead. Up to this day, I can never get over how much times I left the game on the Mission Start screen just to listen to the chanting.