There was the time that my Breloom SWEPT the HG Fighting gym-leader...
And the time I recently beat Steven again after replaying Ruby version. I was in the car and on red battery. I managed to beat him (Thanks again, Flygon, Breloom and Walrein!)
with some difficulty, and had enough time to watch the credits before my battery ran out.
Even more recently, beating the E4 with purely my (FTW AWESOME) Amphy (see Siggy)
I had just realised what my Team was and had ditched the rest of my HG team
-Quilava (unevolved, level 35 xD)
-Noctowl level 37
-Golem level 36
-Victreebell level 34 (Shiny leaved!)
-Politoed level 40
Before Lance I panicked and used 9 Rare Candies on Amphy. I had the rest of my team with me as cannon fodder. Gonna recant!
-Pokemon Trainer TheBlob sends out Ampharos
-Pokemon Master Lance sends out Gyarados
-Ampharos uses Discharge
-foe Gyarados fainted
-Pokemon Master Lance sends out Dragonite
-Ampharos uses Thunder wave
-Dragonite is paralysed! It cant move!
It continued like that for about 10 minutes, with me periodically sending out others as a meat shield to heal Amphy. I managed to 2HKO his Dragonites and 1HKO his other pokemon. It was a bit of a sweep actually
After that was over all I wanted to do was import my Flygon, Breloom and Walrein, breed for good Scisor and Arcanine, and start Pwneing the BT. So almost all of the Kanto quessts were done with my Amphy!
*Note. I called him Amphy BEFORE I went to the lighthouse. Nintendo copied me!*