I managed to attend the Waddington air show this year on the Saturday (looked like the best day of the two weatherwise too!) and had a great day.
I didn't bother last year as the display lineup looked very 'thin' with a distinct lack of foreign jet participants, but it was certainly better this year with the inclusion of a Czech Saab Gripen and a Belgian F16 along with the usual RAF participants. The role demo (and pyrotechnics) involving 2 x Tornado GR4's certainly added some interest this year.
Interestingly, they were using 121.3 as a tower frequency which has been noted previous years and they appeared to be using 132.9 (a standard air show frequency allocation) as a radar frequency for departing/arriving and holding air show related traffic.