If hearing computers say words out loud is funny to you (it is to me), check out
Dictionaraoke.org - The Singing Dictionary. Take a MIDI track of a popular song, type all the words into a speaking dictionary, then sync them together. It's amazing how little soul a song can have. For dirty words, try
Closer by Nine Inch Nails (animals within animals). For words piling on top of each other, try
All Star by Smash Mouth (pimpdaddysupreme).