Greatest Hits is a compilation album of Welsh alternative rock band Catatonia's best known songs, mainly the singles, but also includes collaborations between Cerys Matthews with Space (on "The Ballad of Tom Jones") and with Tom Jones himself (on "Baby, It's Cold Outside").

Joe Goodden, writing for the BBC's Wales Music section, said: "Greatest Hits, a non-chronological run through their singles, is for the most part a cracking ride.

'Road Rage' and 'Mulder And Scully' sound as fresh today as they first did on the radio, and 'You've Got A Lot To Answer For' was a perfect realisation of the terrors of home pregnancy testing.

"[2] I review in entertainment.ie said: "this 15-track singles collection arrives as the perfect reminder of the band's all-too-brief time in the spotlight.

But they had two major assets: their ear for a winning melody and Matthews's genuine star quality, ..."[3] Dave Thompson, writing in Allmusic said: "A sensibly titled 15-track epitaph to one of the most premature of all the Brit-pop bandwagon's many casualties, Greatest Hits rounds up each of Catatonia's major U.K. hits, alongside a clutch of well-chosen album cuts and, by way of completeness, the two duets that further established vocalist Cerys Matthews among the country's best-loved performers ... "[4] ‡ Sales+streaming figures based on certification alone.