I've made a list of couples that I think would be easily identifiable as 'crime fighting.'

Booth and Brennan - Bones
Angela and Hodgins - Bones
Mulder and Scully - The X Files
Tony and Ziva - NCIS
McGee and Abby - NCIS
Jenny and Gibbs - NCIS
Elliot and Olivia - Law and Order: SVU
Sara and Grissom - CSI
Calleigh and Eric - CSI: Miami
Stella and Mac - CSI:NY
Catherine and Warrick - CSI
Diana and Tom - The 4400
Lois and Clark - Smallville
Jane and Lisbon - The Mentalist
Chuck and Sarah - Chuck
Danny and Lindsay - CSI:NY
Don and Angell - CSI:NY
Castle and Beckett - Castle
Scotty and Lilly - Cold Case
Grissom and Willows - CSI
Jane and Maura - Rizzoli and Isles
Tony and Kate - NCIS
Harm and Mac - JAG
Jordan and Woody - Crossing Jordan
Jordan and Garrett - Crossing Jordan
Hotch and Prentiss - Criminal Minds
Morgan and Garcia - Criminal Minds
Reid and Jareau - Criminal Minds
Rizzoli and Dean - Rizzoli and Isles
Rizzoli and Grant - Rizzoli and Isles
Maura and Frankie - Rizzoli and Isles
Maura and Frost - Rizzoli and Isles
Flack and Stella - CSI: NY
Cal and Gillian - Lie To Me
Sam and Andy - Rookie Blue
Martin and Sam - Without a Trace
Jack and Sam - Without a Trace


If you can think of anymore, just tell me and I'll add them :)