In all likelihood, the common name is Roger R. Cross but it seems the more he does, the more he is credited without the R, so at least I wanted this thread to keep track.

Roger Cross (31 Profiles, 23 confirmed)
12 Rounds 3: Lockdown (confirmed by TheMovieman)
24: Season 4 (confirmed by Laff1)
24: Season 5 (confirmed by Laff1)
24: Season 6, Episodes 1-4 (confirmed by Laff1)
The 4400: Season 2, Episode 10 (confirmed by ateo357)
Arrow: Season 1, Episodes 1, 3, 4, 6, 7, 13, 19, 22, 23 (confirmed by mreeder50)
Arrow: Season 2, Episodes 3, 9 (confirmed by mreeder50)
Bionic Woman: The Complete Series, Episode 7
Charlie's Angels: The Complete Series, Episode 8
Chuck: Season 3, Episode 12 (confirmed by ateo357)
Cobra: The Complete Series, Episode 14
Continuum: Season 1, Episodes 1-6, 10 (confirmed by ateo357)
Continuum: Season 2, Episodes 1-13 (confirmed by ateo357)
Continuum: Season 3, Episodes 1-13
Dark Matter: Season 1, Episodes 1-13 (confirmed by SpaceFreakMicha)
The Day the Earth Stood Still (2008) (confirmed by LKanne)
Eureka: Season 5, Episodes 7, 11, 12 (confirmed by LKanne)
JAG: Season 9, Episode 22 (confirmed by AiAustria)
King's Ransom (confirmed by ateo357)
The L Word: The Final Season, Episodes 2, 3, 4, 6, 7, 8
Look Who's Talking Now (Confirmed by T!M)
Mad Money (confirmed by AiAustria)
NCIS: Season 5, Episode 13 (confirmed by AiAustria)
Orphan Black: Season 2, Episode 4
Polar Storm (confirmed by ateo357)
Re-Kill (Confirmed by Sidrat)
Star Trek: Enterprise: Season 3, Episode 3 (confirmed by AiAustria)
The Strain: Season 1, Episodes 1, 2, 4, 5, 7, 10, 12, 13
The Twilight Zone (2002): Season 1, Episode 40
World Trade Center (confirmed by AiAustria)
The X-Files: Season 2, Episode 15 (confirmed by huskersports)

Roger R. Cross (38 Profiles, 22 Confirmed)
After Shock: Earthquake in New York (confirmed by LKanne)
American Dragons
Andromeda: Season 2, Episode 6
Arrow: Season 3 (confirmed by mreeder50)
Ballistic: Ecks vs. Sever (confirmed by Gamemaster)
Beautiful Joe (confirmed by mitchg)
Captains Courageous
The Chronicles of Riddick (confirmed by AiAustria)
Cloned
The Commish: Season 2, Episodes 11, 14, 18
Dangerous Intentions
Deadly Little Secrets
Double Jeopardy (confirmed by huskersports)
Flashpoint: Season 3, Episode 7 (confirmed by LKanne)
Free Willy 3: The Rescue (confirmed by LKanne)
Fringe: Season 2, Episodes 4, 10 (confirmed by LKanne)
Hideaway (confirmed by ateo357)
Highlander: Season 5, Episode 8
Interceptor Force 2 (Confirmed by Sidrat)
Liberty Stands Still (Confirmed by Sidrat)
MANTIS: The Complete Series, Episode 4
Millennium: Season 1, Episode 9
Nick Fury: Agent of SHIELD
The Outer Limits: Season 1, Episode 13 (confirmed by SpaceFreakMicha)
Shadow Raiders: Vol. 1
Shadow Raiders: Vol. 2
Shadow Raiders: Vol. 4
Sliders: Seasons 1 & 2, Episode 1 (confirmed by SpaceFreakMicha)
Stargate SG-1: Season 1, Episode 5 (confirmed by AiAustria)
Stargate SG-1: Season 2, Episode 13 (confirmed by AiAustria)
Street Justice: Season 1, Episode 19
Taken (Steven Spielberg Presents Taken), Episodes 8, 9, 10 (confirmed by AiAustria)
Trapped (Confirmed by Sidrat)
The Void
Voyage of Terror (confirmed by LKanne)
The X-Files: Season 3, Episode 17 (confirmed by huskersports)
The X-Files: Season 5, Episode 19 (confirmed by huskersports)
X2: X-Men United (confirmed by AiAustria)

Quoting ateo357:

Quote:
you missed

Roger Cross
Continuum: Season 2, Episodes 1-13

Thanks. Updated.

Updated.

Continuum: Season 3 - Roger Cross

Shadow Raiders: Season 1 episode 1 (Behold the Beast) - Roger Cross  Vol 1. is the 1st 4 episodes of Season 1
Vol. 2 is episodes 5-8  Vol. 3 is episodes 9-13.

2nd season is vol. 4, 5, 6.    4 episodes on each

checked the other 24 episodes on-line, not credited in any except S01E01

The X-Files: Season 11: Episode 8 (2018)    ->    ROGER CROSS    (credit only)
opening credits @ 0:04:39

** See update on next page **

Charlie's Angels: The Complete Series, Episode 8@0:02:53
ROGER CROSS

Cobra: The Complete Series, Lost in Cyberspace@0:03:51
Roger Cross