October 20, 2014
"Until Generation V, TM01 always taught a move that involved punching; it was Mega Punch in Generation I, Dynamic Punch in Generation II, and Focus Punch in Generations III and IV. The current TM01, Hone Claws, still involves the appendages."

http://bulbapedia.bulbagarden.net/wiki/TM

October 19, 2014
"When rebattling Gym Leaders in HeartGold and SoulSilver, both Falkner and Blue have a Pidgeot as their highest-leveled Pokémon.
Coincidentally, Falkner is the first Gym Leader while Blue is the last."

http://bulbapedia.bulbagarden.net/wiki/Pidgeot#Trivia

October 15, 2014
"Ash mentions that Brock will find tons of more girls that will reject him. To be exact, Brock found over five hundred more girls that rejected him in his tenure in the anime."

http://bulbapedia.bulbagarden.net/wiki/EP068

October 6, 2014
"Counting all the series, Kellyn is the only player character who doesn’t wear any sort of headwear."

http://bulbapedia.bulbagarden.net/wiki/Kellyn#Trivia

October 4, 2014
"Sidney’s Shiftry knows Extrasensory at level 48, although Shiftry doesn’t learn this move until level 49 as a Nuzleaf."

http://bulbapedia.bulbagarden.net/wiki/Game_move_errors

October 2, 2014
"Many Pokémon belonging to this Egg Group became Fairy-types in Generation VI"

http://bulbapedia.bulbagarden.net/wiki/Fairy_(Egg_Group)

September 28, 2014
"Espurr is the only Pokémon with a base stat total of 355 that is not restored from a Fossil."

http://bulbapedia.bulbagarden.net/wiki/Espurr_(Pok%C3%A9mon)

September 27, 2014
"In the dub, three Pokémon are referred to by the wrong name. Pidgeot was called Pidgeotto, Scyther was called Alakazam, and Sandslash was called Sandshrew. In the audio commentary, 4Kids stated that they decided to leave the Alakazam error as something for the children watching to notice and because they felt it was plausible in context that Team Rocket could make a mistake."

http://bulbapedia.bulbagarden.net/wiki/M01

September 24, 2014
"When the son of Sailor Eldritch is having his nightmare, he says “Dar… Dark… Is watching me…” He presumably means Darkrai."

http://bulbapedia.bulbagarden.net/wiki/Fullmoon_Island#Trivia

September 15, 2014
"In Pokémon X and Y, Elgyem and Beheeyem can learn Steel Wing from TM51. This is likely due to an oversight; in Generation V, TM51 contained Ally Switch, and the Pokémon are only available from Poké Transporter."

http://bulbapedia.bulbagarden.net/wiki/Beheeyem_(Pok%C3%A9mon)#Trivia