Hagman, who played ruthless oil baron J.R. Ewing in soap opera Dallas, passed away on 23 November (12) at the age of 81 after succumbing to throat cancer and leukaemia.
The star's family held two invitation-only services in Los Angeles and Dallas this weekend (01-02Dec12), while members of the public were given a chance to remember Hagman at a celebration of his life on the grounds of Southfork Ranch in Parker, Texas, where scenes for the TV show are filmed.
Afternoon tours of the site were made free in Hagman's honour, while a slideshow of the actor's most memorable work was also screened.
To coincide with the memorials, actress Brenda Strong took to her Twitter.com page to share a picture of her former co-star's chair on set - adorned with his iconic cowboy hat and boots, adding, ""Peace and blessings Mr. Hagman. Your light will continue to shine bright on Dallas... We love you!""