Update: I cannot go on with my life without adding to this list a fascinating article by PZ Myers of Pharyngula:
That revolting article about earwax and smegma
There is interesting stuff on penile science (and not just science) on the Internets, so we continue our series here:
Tissue engineers grow penis in the lab
In a remarkable feat of tissue engineering, major parts of the penises of several rabbits have been replaced with segments grown in a lab from their own cells. The animals were able to use the reconstructed organs to mate.
Length-boosting surgery for 'micro-penises'
A new surgical procedure has allowed men with abnormally short penises to enjoy a full sex life and urinate standing up, some for the first time. Tiny "micro-penises" have been enlarged to normal size without losing any erogenous sensation, say UK doctors.
But squid don't have penises
Is it normal for a guy to grow a second penis?
Alligators in Florida's Lake Apopka have Smaller Penises
In Earwigs, Two Penises Are Better Than One
The first cut
Do uncircumcised penises have more fun?
German penises 'too small for EU condoms'
Do turtles have penises and vaginas?
Smokers Have Small Penises
Hang Male-Bashing Out to Dry
Robert Rowan is proud of stealing 21 ceramic penises that were part of a domestic violence art show at the Boulder Public Library in Colorado. The faux severed penises were strung on a clothesline under the title "Hanging 'Em Out to Dry."
Go Ask Alice!: Penises have heads, but not minds of their own
Penises and proteases
Exactly why protease inhibitors might cause sexual dysfunction in males is unclear.
Moths' penises could help feed India
The researchers involved say that in the war against Heliothine moths - one of the world's most devastating insect pests - a tiny moth-penis-inflator called the "phalloblaster" could be the best weapon so far.
Snow Monkey Penis
When a few members of the Harvard crew team decided to build a snowy representation of the male anatomy on Feb. 11, they never imagined it would be so hard to keep it up.
Research says erect gay penises are bigger
Uncovered Kinsey Report data show homosexual members have hetero ones by a head.