mainly from the old breakbeat hardcore days...
first one is the break used in Acen's Trip II the Moon and Prodigy's Outta Space, think Goldie used it in Kemistry too. I'm guessing it's not an original sampled break, more like a composite, but if anyone knows where it can be found in its original form that'd be ace.
another I've been racking my head for examples of where it's been used but the only one that comes to mind is on the remix of Sweet Harmony by Liquid, a harsh noisy break.
and lastly, the break used on Far Out by Sons Of A Loop Da Loop Era and Tech Itch's remix of The Virus
would be seriously grateful if anyone can ID these for me!