Do you ever ging yourself thinking "I could be knitting instead of doing this?"

I just started a new project a couple of days ago - it's a simple moss stitch scarf i'm making for myself in colors related to my favourite Band - and while bored at work today I had the thought "if I didn't have to be here right now I could be done with the first color change by now."

So basically, have you ever been so in love with a project that the need to keep working on it consumed your every waking (and maybe even sleeping) moment?