Mr Sheen is alright if you just dab it on a cloth to get the sweat marks off each individual key but its pants on your LCD panel and leaves overspray marks on dappled rough plastic ( like say a Thinkpad casing ).
Best cleaner Ive found is to take the computer casing off everything and put it through the dishwasher.
Not only that but you can get to all the hard to reach places. Never found a good way of cleaning a CPU or PSU fan out though....