Baseball Musings pointed out today that BaseballReference.com is getting ready for an upgrade. There's a beta version up so we can play with all the new stuff.
Check out the Yaz entry (current page for comparison) on the beta site. More stats, more gadgets, easier to read, you can choose a range of years and get totals for just those years, game logs are easy to access and you can convert the data into comma delimited or straight text form to cut and paste into a spreadsheet or database. Really great new stuff here from the best stats site on the interwebs.
Update: Just in case anyone out there hasn't seen it before, BaseballReference.com has a really cool wiki portion of the site called BR Bullpen. Be careful, you could kill a lot of time in that site.