How often do you play multiple games

 So I bought a couple of games at Gamestop's big sale and I am doing something I almost never do and I am playing 2 games campaign at the same time.  I usually have an online shooter or sports game that I will play while playing another game but before this I don't remember the last time I played2 campaigns at the same time.  So the question is how do you cheat on another game?

...all the time? I don't know. I usually bounce around between something on computer and something on my 360 whenever I get tired/burnt out of one or the other.
 
Like I got burnt out of Just Cause 2, so I played some of my Rome: Total War Campaign, but I've been replaying ME2 and MW2 every once in a while.
 
Would that qualify as all the time?

I'm all over the place when it comes with games. Rarely do I play through one game without another campaign in progress.