First up, an Intermodal (I'm pretty sure it was the ZYCHO-20) with a UP C40-8, CP SD40-2, and UP SD40T-2, listen to the Radio Transmissions and you'll hear something shocking.

Video 1:
http://www.youtube.com/watch?v=BOldp90vBr0

Second up, Union Pacific's 31Local (Camden - El Dorado Local) had a CEFX SD40-2 and a CN SD40W-2, very nice lash up if I might say myself.

Video 2:
http://youtube.com/watch?v=yhnID27XT30

Thanks.