as far as guns, this is the closest to your extremely vague reference that i can think of: The Gonz pistol, as seen in the movie Total Recall.http://www.securityarms.com/20010315/galleryfiles/1400/1457.htm
You may also enjoy the Wilkinson "Linda" variants, just cause they look cool:http://www.securityarms.com/20010315/galleryfiles/2100/2121.htm
Most of these are just the side photos, but they at least give you a name to go on for some cool looking guns to look up. I imagine you can find some other pictures of them. I don't know of a central resource, however, that's just "detailed gun photos". You'll probably have to find multiple sites that are based around the particular gun you want details of, and
put together a composite gallery of your own with whatever pictures you can find; though more popular models may have enthusiast sites with more pictures in one spot. Or, if it's not something that's entirely rare, you could call up a gun shop or look up a collector and go visiting with a camera, if you're that interested.
Also, unless it's a particularly fancy or odd gun, most guns really look pretty nondescript on the far side, though identifying markings may include size, shape, and exact placement of the ejection port. Usually not much on that other side of the gun besides that, though, unless it's the other half of an ambidextrous safety or magazine release - most stuff goes on the _left_ side of a pistol, so it can be used with the right thumb. We lefties are often put at odds with firearm controls unless, as mentioned, they're ambidextrous.
Check out the classic LeMat revolver, as well. It's fucking sweet - old navy black powder pistol with a small scattergun barrel beneath the main .44 barrel.http://johno.myiglou.com/lemat.htm
Also, the Mateba auto-revolver - the entire cylinder snaps out and is replaced with a freshly loaded one, in a strange revolver/magazine hybrid, but very cool looking:http://www.awaguns.com/matebaautorevolver.asp