In the Planescape campaign I'm in, I play a friendly, shy illithid with a fondness for fish and a tendancy to be overly apologetic.
In real life.... I'm much the same, only without the tentacles. (And the angst.)
In Planescape, my favorite cube is a rogue modron.
In real life, my favorite cube is a Tide Rapid Action Tab.
In Planescape, the subject of Shemeshka's gender occasionally provokes discussion, confusion, and/or jokes.
In real life, this continues to be true.
In Planescape, my character is best friends with the cleric.
In real life, I find myself growing more and more disgusted with organized religion.
In Planescape, we've had to delay leaving Sigil because we couldn't find the portal key.
In real life, I've had to delay leaving my dorm room because I couldn't find my keys.
In Planescape, I have a Charisma of 25 and a +22 to Diplomacy and can (and have!) successfully talk down an angry factol.
In real life, I find myself getting walked on because I avoid confrontations.
In Planescape, the medusa Sensate dreams of getting romantically entangled with my aforementioned illithid.
In real life, my DM has nightmares about the exact same thing.
In Planescape, I can spot the frost giant nearing us in the dark tunnels of Pandemonium before anyone else can.
In real life, I trip over the junk on my bedroom floor on the way to the lightswitch.
In Planescape, philosophy is pretty much unavoidable.
In real life, I'm avoiding my Philosophy essay by posting about Planescape.