I don't normally come into this section of the forum but I was browsing earlier on and noticed this thread.
If you've got a spare 2 or so hours to kill, take a look at this YouTube film called made for ITVV on Virgin Atlantic B747400 EGGL to KSFO Flight 19.
Whilst it's not for the 737, it still takes you through the entire preflight.
Cap. also had a website at one point but I'm not sure if it's still up, though.
Last edited by Atlas Shrugged; 28th May 2015 at 04:16.
Reason: fix link