Because I love mad scientists, here's Crimes Against Humanity (http://seperis.illuminatedtext.com/sga/crimes.html), as well as a personal favorite, Detox (http://www.ravenswing.com/~mirrorgirl/detox.html) by Jane St. Clair, or, What Happens When Brilliant Scientists Stop Getting Their Amphetamines. Another one where Rodney is hallucinating and sleep-deprived and just a wee bit nuts is 264 Hours (http://community.livejournal.com/sga_flashfic/358631.html) by Lenore.