Douglas Booth co-hosts for Comic Relief & Greg James is live from Uganda.
Richard Hammond joins Grimmy for the first in a week of Comic Relief co-hosts.
Rosie Huntington-Whiteley pops in, plus it's Friday - must be The Nixtape!
Ellie Goulding joins Grimmy to talk about her song in the 50 Shades of Grey movie.
Nick has tickets to see Jessie J in concert up for grabs.
Paddy McGuinness is Grimmy's special guest.
We speak to Alfie Deyes on the phone and try to launch Fiona's new career as a vlogger!
Grimmy reveals the location for Radio 1's Big Weekend 2015, plus your Friday Nixtape!
Johnny Depp, Paul Bettany and some Musketeers. It's going to be a busy show...
Grimmy may be able to help if you fancy a trip to see Ed Sheeran live at Wembley.
Nick chats to Mark Ronson and Dermot O'Leary, although not necessarily at the same time.
Ella Eyre joins Grimmy for a spot of Call or Delete.
Nick catches up with Rita Ora ahead of The Voice, plus it's Friday - must be The Nixtape!
Unique humour and great music - it's Grimmy and the Radio 1 Breakfast Show.
Grimmy plays Call or Delete with Ariana Grande.
Zane Lowe looks ahead to the Future Festival, plus Nick chats to Kelly Clarkson!
All Time Low jet in from America with their new single.
Dance yourself dizzy and head into 2015 with some of Radio 1's favourite Nixtapes of 2014!
Cameron Diaz, Jamie Foxx, Jude Law and Joel Edgerton round off Massive Movies week!
Grimmy hears from Ben Stiller, Luke Evans and Anna Kendrick, plus the Strictly finalists.
Massive Movies week continues with Owen Wilson, Rafe Spall, Jeremy Irvine and Phoebe Fox.
Nicole Kidman, Eddie Redmayne and Rebel Wilson talk movies.
Massive Movie Week starts with Jim Carrey, Jeff Daniels, Martin Freeman & Channing Tatum!
Live Music & behind-the-scenes interviews from the BBC Music Awards!
Rio Ferdinand is Grimmy's special guest, plus Fearne Cotton and Chris Evans drop in.
Marilyn Manson and X Factor finalists Fleur, Ben and Andrea drop in - not all at once.
George Ezra and 5 Seconds of Summer join Grimmy on the show.
Steel Panther bring a touch of festiveness to the Radio 1 Breakfast Show!
It's Friday - must be the Nixtape!
Grimmy goes A-list with special guest Orlando Bloom.