The psychic Phil theory was brought up earlier so I collected 'proof' with help from posts at the old website. Don't know if I believe Phil is psychic but the 'proof' with Dan is a little too coincidental.
Phil predicting Dan before they met
'My first word was light.'
D&P look like Light & L from Death Note
'Sorry girls. I've chosen Daniel.'
Tarot cards - The most well known psychic Phil proof. His prediction was for the month after the video which would be March 2009. Does anyone know when he first started replying to Dan on Youtube?
Other Proof
'I had a dream within a dream. The first dream I was at a theme park with Anthony from Smosh.'
D&P at a theme park with Anthony & Kalel
Predicting snow - It did snow afterwards.
'I wish for pandas to mate and increase in population.'
First known panda triplets born in China - This was said as proof but it happened 8 months before Phil's wish.
Singapore's giant pandas Kai Kai and Jia Jia mate for first time - Right after Japhan although the pandas haven't had a baby yet.