Yeah, I could say that I have been enjoying most of my tasks -- but of course, there's no denying that sometimes, there's a little bit of frustration on stuff, but hey -- once you overcome that, then you feel good! Amarayt or amarong? (Especially those instances that you know will be impossible to accomplish, but you found a way around it - hehehe). Then in a sense you'll have that certain feeling of "pleasure", hence the feeling of enjoyment! Very addicting in my opinion. :D
You know what, "sometimes" I don't take my job too seriously -- I guess thats what makes me enjoy it, it reduces the stress (and somewhat boosts creativity? I often get great/bizzare ideas when I'm not too serious about it.). I don't think much about it, like you know, I just go with the flow! But again, that's me.
I'm just curious why you brought this up, are you having a delimma in your current job? 