http://www.youtube.com/watch?v=gk8zCDZKBP4
This is the last 15 minutes or so of a TAS which uses tweaking to glitch to the end. I ripped it from nicovideo after learning about it from
http://saisokugame.blog75.fc2.com/ . There are a lot of TASes there, some which come from this site.
Anyway, I'll summarize what happened.
After getting the bike in Eterna City, this TASer went back to Jubilife, set teleport point by PC, then tweaked into the void to go to Mystery Zone, where he caught a L55 Rhydon. After teleporting out, he tweaked again to go to Celestic Town cave to get Surf. Then teleport again, but this time go without tweaking to Hearthome City, beat Fantina to activate Surf, then leave, teleport, and tweak again, this time to Pokemon League. He then beats rival, enters, uses Rhydon to do the surf glitch, then glitches to the end. (Surf glitch is J version only)
I don't think others would be interested in seeing the first two parts of the run, so I'll just list notable things:
-This TASer uses Piplup, catches Bidoof early, and Abra a bit later.
-He gets Quick Claw in one of the houses in Jubilife. I can't believe I missed that.
-He sets Journal to Select, to manipulate away random encounters.
-Against Rival 1: Uses two crit Pound on Starly, three crit Pound on Turtwig.
-Against Roark: Geodude and Onix fall to crit Bubble, against Cranidos, Piplup uses Bubble (noncrit), Cranidos uses Leer, Cranidos uses Headbutt, Piplup uses crit Bubble (Torrent activate).
-Against Galactic Double: Lucas's Chimchar uses Ember on Wurmple and Piplup uses crit Bubble on Zubat.
-Gets TM88 (Pluck) at Floarama Town
-Against Mars: Starts out with Potion. Then Bubble and crit Pluck on Zubat. Three crit Pluck on Purugly while it uses Faint Attack.
-Piplup evolves and learns Metal Claw
-Against Youta & Kanako (Eterna Forest):
Prinplup's Metal Claw and Chansey's Tackle take out Wurmple
Pachirisu used Bide here, Metal Claw takes out Beautifly,
Tackle and Metal Claw take out Pachirisu while biding
Pluck on Cascoon
-Against Yoriko and Akifumi (Eterna Forest): Pluck on one Abra, Tackle on other.
-Against Galactic Double: Metal Claw Wurmple, Zubat kills Bidoof with Bite,
Pluck Cascoon, Zubat eats Abra,
crit Pound Zubat, Metal Claw Glameow
-Against Jupiter: Crit Pluck Zubat, noncrit/crit Metal Claw on Skuntank
and the rest is in the summary above. You don't need to know what happens to Fantina and Rival because Rhydon kills them all.