I'll take it from the oldest to the newest - none of these were big crashes, more wear and tear issues!
1990ish
Trek 8900 - Bonded Alluminium, black with splatter paint. Bent the rear mech hanger repeatedly and so badly that it snapped off - also damage to chainstays (2 years use). Put me off alloy bikes for a long time.
1992
Rocky Mountain Blizzard - the bottom bracket ovalised so badly that a bottom bracket wouldn't stay in (7 months).
1992
Rocky Mountain Blizzard - warranty replacement for above - brake boss was squint, and the bottom bracket shell ovalised again (3 months).
1993
Rocky Mountain Blizzard - warranty replacement for above - Brazed junction of the seat-tube to seat-stay cracked (1 year). Warranty repair and I sold it - lost confidence...
1994
Trek OCLV 9900 Pro Issue, Nude Carbon - Broke off one of the bonded on rear brake bosses (6 weeks)
1994
Trek OCLV 9900 Pro Issue, Nude Carbon - warranty replacement for above - Bottom bracket insert fell out (6 months). Trek gave me my money back - "Perhaps these are not the best bikes for you" - that wasn't what the rep thought when he sold me them. This was my only bike when I was competetively racing and saw a scary amount of use. I remember it as one of the best riding bikes ever - so stiff and solid at low speeds and yet compliant and zingy when really hammering
1995
Kona Explosif - Cracked at the driveside dropout (11 years) - I still have this frame in regular use after Charlie Ralph at Alves put track ends on it. So much better than the Rocky's :shock:
1997
Intense Uzzi SL - Seat-tower snapped off - (4 months) - Chainstays cracked (5 years), Seatstays cracked and dropout snapped (5 years) - Main frame still good and hanging on wall with all the broken bits replaced - I love this frame.