Hell's Kitchen (1998)
When you google 'Johnny Whitworth naked', which of course I did for this piece, you don't come up with much. There are a few sites with caps from Whitworth's 2011 great butt scene in Valley Of The Sun, but not much more.
If you look a bit deeper, which you know I also did, you find two lesser known nude turns from Johnny, including a 'blink or you'll miss it' frontal. The first flash of Whitworth skin comes from the 1998 Angelina Jolie flick, Hell's Kitchen. Although Whitworth plays Jolie's boyfriend, his flash of ass comes from a bathroom quickie with Rosanna Arquette.
Ok, that 'blink or you'll miss it' frontal.... In the 2002 romantic comedy Kiss The Bride, most of the wedding party ends up going for a late night dip in the ocean. The scene is super fast and super dark, but a couple of the actors, including Johnny, drop all for the brief skinematic moment.
Kiss The Bride (2002)
It is not the actor in the first pic above, but I believe, (but am ready for correction) that Johnny is the guy on the far right in the rest of the caps. You get a quick glimpse of his butt, and just at the end he turns around for that 'blink' moment.
My caps above don't really show much, but this older cap from lucguaraldo, shines a bit more light on the subject.
Valley Of The Sun (2011)
I managed to watch the first two movies. There is a free, not so great version of Hell's Kitchen on Youtube, and Kiss The Bride is also on Youtube, but you have to pay to watch or rent. I didn't get a chance to watch Valley Of The Sun, but it is on the list. Whitworth looks particularly hot and buffed up in his most recent removal of clothing for the screen.