TODAY SEES TERRY Pratchett celebrate his 65th birthday.

Lots of people love Terry Pratchett and his enormously funny books and so do we.

So to celebrate, here are 9 reasons why Terry Pratchett is a legend.

1. His amazing books

There are of course the Discworld series, the 40th book of which will be published this year.

They all have amazing covers:

Via Terry Pratchett Books

And he ventured into non-Discworld related territory including children’s books Dodger and Johnny and the Dead

Via Terry Pratchett Books

2. This picture of him with two birds on his head

Via Imgur

3. He favours a hat

Not only is Terry Pratchett a gifted writer, we consider him a style icon.

He is very good at rocking his signature black hat

John Stillwell/PA Archive/Press Association Images

Yui Mok/PA Archive/Press Association Images

And not only does Terry rock that black hat, he is happy to share it with others.

What a gent.

Dominic Lipinski/PA Archive/Press Association Images

4. His work raising awareness of Alzheimer's disease

Pratchett was diagnosed with a rare form of Alzheimer's disease in 2007 and has since campaigned to raise awareness of the disease and donated money to Alzheimer's disease charities.

AlzheimersSociety / YouTube

5. His brilliant fans

Pratchett's writing, especially the Discworld series, have inspired generations of dedicated fans.

Discworld conventions happen worldwide and lovers of the books dress up as their favourite characters.

Some of them even got to dress up with their hero, when Terry Pratchett made an appearance at a small English town that was twinned with his fictional city Ankh-Morpork

Ben Birchall/PA Archive/Press Association Images

6.  He is a fan of cats

Pratchett once said this about cats:

In fact he wrote a whole book about them (!):

via Terry Pratchett Books

We're sure Terry would appreciate a good cat video or two, so in his honour:

Davincipop / YouTube

Dr Watson / YouTube

7. His daughter seems really cool

She is also a writer and just wrote the storyline to the new Tomb Raider game.

We know this because here she is holding a Tomb Raider related book.

Lewis Whyld/PA Wire/Press Association Images

AND her name is Rhianna.

It's not quite Rihanna like the pop sensation but still.

Here is Rhianna Pratchett answering e-mails (we imagine), presumably she gets at least 3 every day asking if she can sing Umbrella at somebody's 21st.

Lewis Whyld/PA Wire/Press Association Images

And if anyone asks her about being confused with a certain popstar she just gives them serious side-eye:

Lewis Whyld/PA Wire/Press Association Images

8. His tweets are very good

It is always nice to see someone you like have a really great Twitter account and thankfully we can put Terry Pratchett on the list (his assistant Rob Wilkins looks after his tweets)

There are tweets on Internet obsession

The struggles of research trips for writers:

And even that infamous has an adventure:

9. He is wise

As this video proves:

Commander Kruge / YouTube

Happy Birthday Terry Pratchett!

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