Is it possible to show "all calls" on my Samsung Galaxy S?
There's an "all calls" option in "Call History" on my phone. (Running 2.2 but on a HTC with their UI, which may be different, as pointed out below.)

When I hit "view", the option buttons are:


All Calls
Incoming Calls
Outgoing calls
Missed calls


Is this what you're after, or have I mis-interpreted your question?