Already pointed out that Blagojevich is incredibly corrupt and incredibly ballsy. He's also incredibly delusional. Look at the reasons why he was considering appointing himself to fill Obama's Senate seat. From Fitzgerald's press release:
Blagojevich also allegedly spent significant time weighing the option of appointing himself to the open Senate seat and expressed a variety of reasons for doing so, including: frustration at being "stuck" as governor; a belief that he will be able to obtain greater resources if he is indicted as a sitting Senator as opposed to a sitting governor; a desire to remake his image in consideration of a possible run for President in 2016; avoiding impeachment by the Illinois legislature; making corporate contacts that would be of value to him after leaving public office; facilitating his wife's employment as a lobbyist; and generating speaking fees should he decide to leave public office.
Really? The two bolded sentences didn't strike him as conflicting in any way? He thought, sure, if I can just get past those impeachment charges, I can run for president! I smell a new segment of "Really!?! With Seth and Amy."