sys.database_files and sys.master_files (rather than sys.sysfiles)
Whenever there are changes, people can be slow to embrace them. One I've come across recently is that looking in sysfiles is no longer the best way of getting information about your database files. sys.database_files will tell you a lot more about them, and give you much nicer ways of filtering them. So for example, if you want a list of the log files for your database, try:
select * from sys.database_files where type = 1
And sys.master_files will list them for the whole system. So it becomes really easy to look at the state of things from within T-SQL.
For more information on these, check out http://msdn2.microsoft.com/en-us/library/ms174397.aspx and http://msdn2.microsoft.com/en-us/library/ms186782.aspx.
Now go and make yourself a Vista Sidebar gadget (or use PowerGadgets to do it really easily) to show you the size of your log files (or whatever). Have it update every hour, sitting alongside those gadgets which tell you how nice the Adelaide weather is and show you pictures of the blue skies in Australia.