In the peyronie's disease surgery post, I failed to go into detail about penile implant surgery. This type of surgery is suited to men entirely unable to gain a useable erection despite trying all available ED treatments. It is primarily an ED issue, though of course many men with peyronie's disease also have ED so it's relevant here too.
Penile Implant Surgery is typically seen as a last resort, but perhaps that term does it a disservice. The surgery involves an implant being fitted which gives the patient the ability to once again gain an erection (via use of a inflated bulb and release valve). I'm sure the thought of all of this fills some men with dread, but the satisfaction rates are high and it effectively gives you back your sex life (and well as a straight looking penis).
The most advanced impant is the AMS 7000 LGX. An image and explanation can be located here. There are older models but it makes sense to go with the latest technology and materials where possible. There are different types of implants (semi rigid , inflatable, 3 piece etc) each with their own pros and cons. Respected penile surgeon Tom Lue would probably be my first port of call if I required an implant.
Check out the penile implant blog to get an idea of what the results look like.