With Scotty being sad? I don't know.
But these are the saddest I've watched:
Justice
Boy Crazy
The Road
I'm sure there are others, though.
Well there is also The Plan, episode 22 of the first season.
If you are refering to Season 1 episodes - he did not start on Cold Case, he replaced Justin Chambers as Lilly's new partner when he left.
Cold Case - 2003 is rated/received certificates of: Argentina:13 Australia:M Australia:PG (some episodes) Chile:14 Hungary:16 (some episodes) Netherlands:12 South Korea:15 Spain:13 UK:15 USA:TV-14 USA:TV-PG (some episodes)
He actually has gotten cold before in some of the episodes.
My Family - 2000 is rated/received certificates of: Australia:M (some episodes) Australia:PG (some episodes) Australia:G (some episodes) UK:12 (some episodes) UK:PG (some episodes)
Rage - 1987 is rated/received certificates of: Australia:G (some episodes) Australia:MA (some episodes) Australia:M (some episodes) Australia:PG (some episodes)
Foyle's War - 2002 is rated/received certificates of: Australia:PG (some episodes) Australia:M (some episodes) Iceland:12 (some episodes) Iceland:LH (some episodes) Singapore:PG Singapore:NC-16 (season 4) UK:12 (some episodes) UK:PG (some episodes)
Dirty Jobs - 2005 is rated/received certificates of: Australia:PG (some episodes) Australia:G (some episodes) Singapore:PG (season 3) Singapore:G (some episodes) USA:TV-14 (some episodes) USA:TV-PG (some episodes)
Scotty doesent know
Spaced - 1999 is rated/received certificates of: Australia:M Australia:MA (some episodes) Ireland:15 (most episodes) Ireland:12 (some episodes) UK:12 (some episodes) UK:15 (some episodes)
Later with Jools Holland - 1992 is rated/received certificates of: Australia:G (some episodes) Australia:MA (some episodes) Australia:M (some episodes) Australia:PG (some episodes)
The Vicar of Dibley - 1994 is rated/received certificates of: Australia:PG (some episodes) Australia:M (some episodes) Singapore:PG UK:12 (some episodes) UK:PG (some episodes)
Spectacle Elvis Costello with--- - 2008 is rated/received certificates of: Australia:G (some episodes) Australia:MA (some episodes) Australia:M (some episodes) Australia:PG (some episodes)