Just out of interest how does the captain "monitor" the pushback? I give the mechanic clearance to push and advise them of direction. The rest is up to them. If they push us into another aircraft I won't see it anyway. The most I can prevent is from turning in the wrong direction. Even If that happens.. say sorry to ATC and tell the mechanic he effed up.
As CN I glance to ensure we are pushing in the right direction but mainly concentrate on the engine start during pushback.