On my Diamond file I finished clearing all the routes I'd previously skipped. I then flew to Pastoria City to pursue the Team Galactic grunt that was standing there. We ended up at Lake Valor, where I beat his Glameow. Then Cynthia made a request, which I granted, so I flew to Solaceon town, where I decided that now was as good a time as any to evolve my Pikachu and Murkrow, so I did just that.
On my Pearl file I went through Hearthome City and Solaceon Town and, having skipped all the trainers, finally reached Veilstone City, where I challenged the gym. Staravia beat all the gym trainers, and Monferno swept Maylene at +6. I then helped Dawn recover her Pokédex, which got Monferno another 2 levels up.
On my Platinum file finally, I went to Hearthome City, again skipping all the trainers, where I challenged the gym. I let Prinplup clear the first room, then Rotom the second room and Fantina, the gym leader. That fight was not challenging at all, Rotom only took 20 HP damage from a Critical Hit Shadow Sneak, and continued to destroy Fantina's Pokémon with Shadow Ball.
Afterwards I traveled to Solaceon Town, beating my rival on the road. I decided not to stay in Solaceon, so I continued my journey to Veilstone City, where I challenged the Pokémon Gym. I mostly used Gligar, and Aipom once or twice. Maylene was defeated by a +2 Gligar, who scored all OHKO's.
Beating one or two trainers on the road, I arrived at Pastoria City on both my Pearl and Platinum files. I then challenged the gym on both files, but before I was able to do so on Platinum I had to beat my rival. Made short work of him, though he surprisingly enough was higher leveled than me. I then entered the gym and beat all trainers with Milotic (Pearl) and Rotom (Platinum). Crasher Wake was defeated by Milotic (Pearl) and Rotom and Aipom (Platinum), who afterwards evolved into Ambipom! At this point I saved the game, but I'll probably continue at some point today.
Seed Bomb, Earthquake, Rock Slide, Leech Seed
Surf, Ice Beam, Psychic, Calm Mind
Thunderbolt, Signal Beam, Grass Knot, Brick Break
Faint Attack, Drill Peck, Heat Wave, Thunder Wave
Scratch, Fire Punch, Brick Break, Swords Dance
Shadow Ball, Thunderbolt, Sucker Punch, Nasty Plot
Surf, Ice Beam, Water Pulse, Splash
Quick Attack, Return, Aerial Ace, U-Turn
Surf, Ice Beam, Pound, Bubble
Aerial Ace, Earthquake, Rock Slide, Swords Dance
Thunderbolt, Shadow Ball, Signal Beam, Air Slash
Double Hit, Brick Break, Fire Punch, Seed Bomb