I'd love to fly on the 717, and the 777, which for me, would have put me on all of the more recent Boeing aircraft. I'd also like to fly on the 737-800, 757-300, A340 and the A321 (which may be this summer!!!!
As for planes I've flown before- Would love to get on another 747 in the near future!! And, before it's too late, I'd like another couple trips on a 727 or my favorite, the L-1011.
A310/319/320/321/333, ARJ, BN2, B722/73S/733/734/735/73G/738/739/744/757/753/767/763/764/777, CR1/2/7/9, DH6, 328, EM2/ERJ/E70/E75/E90, F28/100, J31, L10/12/15, DC9/D93/D94/D95/M80/M88/M90/D10, SF3, SST