Well, this is interesting. Google "impeach Bush", with the quote marks so that the phrase itself is the only thing that it looks for. Number of finds: 1,140,000 sites or web pages.
"Impeach George Bush": 79,000 sites.
"Impeach George Bush" without the quote marks: 1.2 million.
"Impeach Bush" without the quote marks: 1.38 million.
"Impeach Bush Cheney", no quote marks: 1.4 million.
"Impeach Bush Cheney", with the quote marks, so that only pages containing that particular phrase is shown: 91,200 sites that talk, in some way, about that particular subject. That's a lot of talk about something that's "not on the table".
I find myself wondering how many letters to Congress it took, back in 1974, to convince the Legislature to begin impeachment proceedings against Richard Nixon, and how that number compares to these numbers.
Then add one more to the list.