If you have a computer job, nothing passes the time like putting on an album. Throw something on, no skips, no complaining, just listening until its done and 45min-1hr has passed.
I also like to set challenges for myself to not repeat stuff I am listening to. Last couple of months, Rate Your Music has been pretty valuable for finding stuff to listen to, like the highest rated Brazilian Pop albums and checking them out.
I have been logging a list of stuff I have been checking out here.