Something like Mangy Cours... Sharp first turn, leading into a varying radius, sweeping second turn, which leads to the back straight (pretty long too) which terminated at the tight Adelaide hairpin.. Or something like La Source hairpin, tundering through Eau Rouge, followed by the Radillion kink which is linked to a long back straight, which once again terminates at a very tight chicane (Les Combes?)..
Probably my two favourite parts on any circuits on the F1 calender...