If you've ever tried printing search results from PubMed, you'll have seen that half the page is taken up with logos and menu bars. HubMed now uses a print-specific stylesheet to strip out all the extraneous details, leaving just the needed information, which should save paper and make the ouput much more readable.
Please try it out with your browser/printer combination, and let me know if there are any problems.
Some references:
A List Apart
Scriptygoddess
Eric Meyer
Dive Into Mark