Journal: Taking Your System Administration Skills to the Nxt Level?

Had seen a Similar post few days back on /.
I work as a System admin with IT Services Company. Most of the Work which I do is related to the General Administrative work of the Infrastructure which is Handled by me, It does not throws many Challenges and new Opportunities. I want to take my skills to next Level . I try many ways through which I can achieve it Like Web casts at MS (Which I find very Basic many times) , Tech Documents , newsgroups and of course Google etc .
Is there something else / Resources anybody can Suggest which can be Helpful in Upgrading the Knowledge?