Bubbleworks sponsorship is awful compared to how the ride used to be. Still can't forgive Chessington for doing that. The Flume at Alton Towers is marginally better, at least that updated a ride that really needed a bit of TLC.
The Disney ones are all quite appropriate. Kit Kat was very appropriate for Jubilee Odyssey seeing how it's always broken.
There needs to be more inappropriate sponsorship, like Findus or Pritt Stick sponsoring anything horse related, or the Jeremy Kyle Show sponsoring Drayton Manor on weekdays during low season.