ps -arcwwwxo "pid %cpu command" | egrep "PID|$1" | grep -v grep | head -12 | tail -11

 2630   3.7 FolderShare
 4578   3.7 OmniWeb
   65   3.5 WindowServer
 4711   2.5 Microsoft Entourage
 7103   2.3 Terminal
   87   1.4 SystemUIServer
 7107   0.2 -bash
  126   0.1 Quicksilver
  175   0.1 mds
   69   0.1 ATSServer
 6757   0.1 mdimportserver

Thanks for sharing the command but it there any way to remove the pid? I don't care about pids, just process names and their cpu usage.

disregard my last comment, i figured that out. but is there any way to show vsize in megabytes instead of bytes? the current command is
ps -arcwwwxo "%cpu vsize command" | egrep "PID|$1" | grep -v grep | head -12 | tail -11

but that shows
1.1 22222222 command
2.2 33333333 command
3.3 44444444 command
etc.

and i want
1.1 22M command
2.2 33M command
3.3 44M command
etc.