I've been working on creating hits similar to the type you see in movie trailers and tv spots and am having a creative block on what I should record next. This has been discussed in various questions before but I am still interested in more ideas. The Charles Deenan article on Whooshes and his video on sound design on Waves website are also very helpful.
What do you think would be good source material for creating huge hits, impacts, and whooshes?
Some of the things I have recorded and used so far are: large metal doors (still trying to find the type that you have to close with a wheel) dumptrucks and garbage trucks construction impacts (often difficult to get without alot of ambience) banging everything in my kitchen against everything else at 192 and pitching down subway trains breaking glass oven rack (if you haven't recorded your oven rack you should, it can make many sounds) dock work (hard to get close to the action, still working on finding a liason) car wrecking yards (usually near freeways but the impacts are so loud it sometimes does not matter)
Some of the things I would like to record but have not had the opportunity yet: demolitions explosions guns bombs water plant (cool sucking and whooshing sounds) car plant (all kinds of servo sounds and large metal sounds) factory that makes weights (that has to sound cool) any factory in general sawmill wood shop crash test center