I just came across this essay by Alexi Grewal where he admits to doping at various times in his career as bluntly and succinctly as I think any ex-pro cyclist could. Good on ya, Alexi. Too bad so few others have the grace to stand up and admit it.
http://www.velonews.com/article/74053/an-essay-by-1984-olympic-gold-medalist-alexi-grewal
Bummer that Velonews buried it at the bottom of their website though.