George bush interviews compared to Obama's?

hey, i am just wanting to know if George bush did any or many news interview like 60 minutes or talk shows during his 2 terms as president, i know hes doing them now as hes leaving but why (a far as i have herd) didn't he do many during his term (excluding press conferences). i see obama doing so many even after he was president elect which i didn't expect as i thought American presidents didn't do that sort of thing as it might be improper or favoring a network/show etc. because i rarely saw bush doing them? because now hes apparently doing many as hes leaving, do you think obama will continue doing so many news/talk shows when he get elected or will he be the same as bush? why does bush do them all now?