Gaming with a plasma is the best gamng experience i've ever had, it's motion when fed a solid 60fps is smooth and ghost free bt if you cant push a solid 60fps then you wont benifit from plasma anyway due to ghosting ( frameskips, one millisecond its there next its there ), lcd can only come close with frame interpolation active but that produces too much input lag.
As for using it with a pc....
You will have zero issues if you do the following things.
Autohide the taskbar and the webpage address bar, hiding these will make them dissapear off screen, to make them reapear for a moment you just take your mouse curser to the tp for address or bottom for taskbar, if you do'nt autohide these you WILL get screen burn 100% !!!
You do'nty have to worrie about desktop icons/files ect as you will be using internet ect so you will most likely only see the full desktop inbetween doing things.
I say what i've said above from experience after getting screen burn from only the address bar and the taskbar, i sold that e6500 and got a ps51e800 and autohid the bars from day one, many months down the line i have zero burn in in these 2 area's.
If my e8000 is on for 14 hours a day wich it usually is then pc is on for around 3-7 hours and that includes gaming and googlin ect.
As fairchild99 says, he do'nt have any ir but in reality he admits he does if he uses certain colour slides, this is how it was with my e6500, i cold see it slightly when using samsungs white and black screen wash but i never ever seen it in anything else but it was there and i suppose if i left my bars locked it would of been a problem later down the line.
At the end of every night i set my tv timer to 30 minutes and then put screen brn protection on and go bed, i buy my tv's for gaming and pc
allthough i do watch tv pc is the main thing i use it for.