I haven't thought of anything else but Ritter all day.
He is my all-time favorite actor. He was awesome on 8 Simple Rules..., and I watch Three's Company every night on Nick @ Nite, and that show is hillarious. He was great in all of his movies, and a wonderful father/husband.
54 is too young to die. He will most certainly be greatly missed.

R.I.P. John Ritter

Does anyone know how he died?
John Ritter