Foo Fighters appear to be expanding their base, as Dave Grohl is taking over toddler TV today! Dave will be appearing on Nick Jr.'s preschool show 'Ryan's Mystery Playdate' and will join some kids on stage has he rocks through 'If You're Happy and You Know It' with some lyrical changes which apparently will prompt a pie to this face! Apparently, Dave's appearance is partially due to his five-year-old daughter Ophelia Saint being a 'Ryan superfan', as she will also be joining his appearance.
Set your DVR to record Nicelodeon at 11:30a Eastern if you want to capture this TV magic on 'Ryan's Mystery Playdate'. Or, you can just preview the performance HERE (via People)