Mandatory first express spotting session at Heathrow on my flight's lay-over from OMDB! Starting with the nice Philippines's 343 from MNL/RPLL as PAL720 in the afternoon.
Cathay 198 overflying Brisbane enroute AKL-HKG leaving a nice long contrail behind.
1400px "Swissair 40" low over Westchester Parkway arriving from Zurich on RWY24R in the late afternoon. [Canon 7D]
Philippine 212 departing for Manila with some nice condensation effects.