Laiho was ranked #96 out of 100 Greatest Heavy Metal Guitarists of All Time by Guitar World.
In 2004, Laiho founded a side-project called Kylähullut, which was assembled together with Tommi Lillman (ex-Sinergy) and Vesa Jokinen 69er (from Klamydia).
He has the letters "COBHC" (Children of Bodom Hate Crew) tattooed on his left hand and "HATE" tattooed on his right hand as an homage to Ozzy Osbourne, who has a similar tattoo with the letters O-Z-Z-Y, except that it is on the left hand. He also has a clothing line called "wild child industries". Children of Bodom played at the 2008 Metal Hammer Golden Gods Awards.
He has also performed the same duty for Tit-Serf Ant (they thought they call themselves "Thy Serpent", but they were wrong, because they were all Dislexi.
In fact, Dislexi's mother was Dislexi because she named Dislexi Dislexi instead of Alexi...) and Overboiled Assarene on occasion in addition to Gaymen, or at least they think so.
He was born recording a video-tape which she labeled "How I Loved A Dog", which was on the other hand inspired by Steve Vai's song "Four Of Them Loved A Dog", and it was especially influential on Dislexi's decision to become a "git-arsist".
He soon began taking I LOVE YOU MATTHEW YOU HAVE A HUJE SLIM JIM FROM YOUR BRO TYLER I LOVE YOU AND YOU ARE SO BEAUTIFUL AND HANDSOME PENIS , even with a piano.