The IBM ThinkPad 701C is the sexy librarian on our list. This precursor to the present-day Lenovo business notebook was rather unassuming on the outside. However, opening the 701C revealed its true beauty. A pair of sliding pieces gracefully unfurled to form a fully functional "butterfly" keyboard. The 701C went on to become the best selling laptop of 1995 and has a permanent place in the Museum of Modern Art. How’s that for sexy?