first one comes to my mind is MP4/13..
probably one of the best Newey designs and very neat, tightly packed rear end.. actually that packing wasnt giving the Merc' engine that much room to breathe in and out..
there is a 3.0L V10 with almost 800hp engine that amazing how they squeeze in there along with all other components of the engine.. other than that colors sponsors were looking a proper race car for me back in the days.. even now it still looks cool.. and it was a nice that where tobacco sponsorship is banned.. writing on sidepods and rear wing "Mika" and "David" with the same style was fun as well..