hand 1 -it looks like K [img]/images/graemlins/spade.gif[/img]x [img]/images/graemlins/spade.gif[/img], but you never know, have to call

hand 2 - uh independent a read I say bet

hand 3 - Are you limiting villians hands to AKs, AJs, 55, and 22? Dependent on who he is, I pop that turn, we still have at least a redraw

hand 4 - definetly call, this could easily be BB just bloating the pot with a flush. I think there is a 30%-40% that you are ahead here (completely made up statistic).