[thix0tr0pic]

Also known as Flow - the mental state of operation in which a person performing an activity is fully immersed in a feeling of energized focus, full involvement, and enjoyment in the process of the activity.

https://en.wikipedia.org/wiki/Flow_%28psychology%29

[lloeki]

Also known as rapture†[0] or ecstasy[1]. See the related altered states of consciousness[2]. Rands and Joel Spolsky call it "the Zone".

† which is incidentally the title of my endlessly upcoming blog (no relation to christianity nor Bioshock)

[0]: http://en.wikipedia.org/wiki/Rapture_(Buddhism)

[1]: http://en.wikipedia.org/wiki/Ecstasy_(emotion)

[2]: http://en.wikipedia.org/wiki/Altered_state_of_consciousness