Faliszek, who rose to prominence as part of Old Man Murray, has contributed writing to both Portal games, both Left 4 Dead games, Both Half-Life 2 episodes, though apparently not Half-Life 3. There has been a slow but steady exodus of from Valve's remarkable writing staff over the past couple of years, as Faliszek's departure was preceded by the exits of Mark Laidlaw and his OMM partner Eric Wolpaw.
