I got behind on this, but here's my ECW list:
1) Tommy Dreamer vs Raven - this feud basically defined ECW during it's rise to national prominence. it lasted many years, and brought in so many other wrestlers, who then spun off into their own feuds. it was masterfully done, and both guys were committed to making it the best it could be,
2) Tazz vs Sabu - hard hitting, intense...this was a feud where the anticipation was insane, as these 2 would confront each other over and over again, not actually locking up until the first ECW PPV.
3) Public Enemy vs The Gangstas - bloody, violent, liberal use of weapons... it was just frigging great!
4) Shane Douglas vs the Pitbulls - The Franchise returned to ECW in 1996 with a vengeance, and had a very heated feud with both Pitbulls, but mainly #2. he incited a damned riot when he took Gary Wolfe, Pitbull #1, and threw him around by the halo attached to his skull,to keep his broken neck in place! then he also got the Pitbulls manager to tun on them! the very definition of heat in ECE during the mid 90's was Shane Douglas!
5) Raven vs The Sandman - god this was great,more for the promos than the actual matches. then it got REAL personal when Raven not only hooked up with Sandman's ex-wife, but also corrupted and became the "new father" to Sandman's 9 year old son, Tyler! " Daddy, you're a drunk. I don't love you anymore. Now I worship Raven!" while the Sandman starts bellowing in tears...even for ECW, this was crazy!
6) Bill Alfonso vs ECW - in a breakout year for ECW in 1995, the biggest heel in the company may have been referee Bill Alfonso, just come over from the WWF, and there to enforce the rules in a completely lawless environment. witness the many matches he stopped early, the many disqualifications he doled out ... God, the ECW arena fans literally wanted him DEAD!
7) Rey Mysterio Jr. vs Psychosis - before they both came to WCW, they spent a few months in ECW, and their matches were INSANE! Hardcore Lucha Libre ... nuff said!
8) Dean Malenko vs Eddie Guerrero - similar to the above entry, they stopped over in ECW for a few months, and put on clinics in every match. if you like their WCW matches, I strongly recommend you check out their ECW stuff.
9) Cactus Jack vs Mikey Whipwreck - from partners to enemies, their time together involved some comedy, some brutality, but somehow had an underlying sense of ... sweetness (!) to it.