partition sizes ?

[LabR@t]

I am going to stick a new HD in and am looking to move to Linux full time( currently undecided on either ubuntu or CentOS) and am looking to partition my new drive to have a seperate /home partition

so whats the best way to partition a 500Gb drive ?

 

[LabR@t]

so i have [email protected] 4gb ram ---500gb

swap = 8GB
/ = 40gb
home = 100gb

how / where do you allocate the rest ? or do you just use the rest for home or can i have a partition for music, one for video extc