On the subject of junk DNA:
I was reading through scientific american (i think it was) and it was talking about how scientists think that what we refer to as "junk" DNA may be the reason that we are so complex. Based on a study they found that the more complex the organism the more junk DNA they had. I totally forgot the details so make sure that this is dully noted. If i find the article i will post it for you guys to see.