Desde hace tiempo que uso esta página para "ayudarme" a crear ascii art, como este:
las que utilizo por ejemplo para dar la bienvenida cuando alguien se loguea en mi servidor ssh o para firmar de manera novedosa el correo que envío.
Tratando de documentarme un poco para este post, encontré esta presentación que me ha dejado verdaderamente con la boca abierta 
, demostración de todo el poder de la librería
aalib.
Te recomiendo instalar:
$ sudo apt-get install bb
........sentarte y disfrutar.
Link's
Ascii Generator
BB
888888888888888888888888
888888888888888888888888
8888:::8888888888888888888888888
8888::::::8888888888888888888888888888
88::::::::888:::8888888888888888888888888
88888888::::8:::::::::::88888888888888888888
888 8::888888::::::::::::::::::88888888888 888
88::::88888888::::m::::::::::88888888888 8
888888888888888888:M:::::::::::8888888888888
88888888888888888888::::::::::::M88888888888888
8888888888888888888888:::::::::M8888888888888888
8888888888888888888888:::::::M888888888888888888
8888888888888888::88888::::::M88888888888888888888
88888888888888888:::88888:::::M888888888888888 8888
88888888888888888:::88888::::M::;o*M*o;888888888 88
88888888888888888:::8888:::::M:::::::::::88888888 8
88888888888888888::::88::::::M:;:::::::::::888888888
8888888888888888888:::8::::::M::aAa::::::::M8888888888 8
88 8888888888::88::::8::::M:::::::::::::888888888888888 8888
88 88888888888:::8:::::::::M::::::::::;::88:88888888888888888
8 8888888888888:::::::::::M::"@@@@@@@"::::8w8888888888888888
88888888888:888::::::::::M:::::"@a@":::::M8i888888888888888
8888888888::::88:::::::::M88:::::::::::::M88z88888888888888888
8888888888:::::8:::::::::M88888:::::::::MM888!888888888888888888
888888888:::::8:::::::::M8888888MAmmmAMVMM888*88888888 88888888
888888 M:::::::::::::::M888888888:::::::MM88888888888888 8888888
8888 M::::::::::::::M88888888888::::::MM888888888888888 88888
888 M:::::::::::::M8888888888888M:::::mM888888888888888 8888
888 M::::::::::::M8888:888888888888::::m::Mm88888 888888 8888
88 M::::::::::::8888:88888888888888888::::::Mm8 88888 888
88 M::::::::::8888M::88888::888888888888:::::::Mm88888 88
8 MM::::::::8888M:::8888:::::888888888888::::::::Mm8 4
8M:::::::8888M:::::888:::::::88:::8888888::::::::Mm 2
88MM:::::8888M:::::::88::::::::8:::::888888:::M:::::M
8888M:::::888MM::::::::8:::::::::::M::::8888::::M::::M
88888M:::::88:M::::::::::8:::::::::::M:::8888::::::M::M
88 888MM:::888:M:::::::::::::::::::::::M:8888:::::::::M:
8 88888M:::88::M:::::::::::::::::::::::MM:88::::::::::::M
88888M:::88::M::::::::::*88*::::::::::M:88::::::::::::::M
888888M:::88::M:::::::::88@@88:::::::::M::88::::::::::::::M
888888MM::88::MM::::::::88@@88:::::::::M:::8::::::::::::::*8
88888 M:::8::MM:::::::::*88*::::::::::M:::::::::::::::::88@@
8888 MM::::::MM:::::::::::::::::::::MM:::::::::::::::::88@@
888 M:::::::MM:::::::::::::::::::MM::M::::::::::::::::*8
888 MM:::::::MMM::::::::::::::::MM:::MM:::::::::::::::M
88 M::::::::MMMM:::::::::::MMMM:::::MM::::::::::::MM
88 MM:::::::::MMMMMMMMMMMMMMM::::::::MMM::::::::MMM
88 MM::::::::::::MMMMMMM::::::::::::::MMMMMMMMMM
88 8MM::::::::::::::::::::::::::::::::::MMMMMM
8 88MM::::::::::::::::::::::M:::M::::::::MM
888MM::::::::::::::::::MM::::::MM::::::MM
88888MM:::::::::::::::MMM:::::::mM:::::MM
888888MM:::::::::::::MMM:::::::::MMM:::M
88888888MM:::::::::::MMM:::::::::::MM:::M
88 8888888M:::::::::MMM::::::::::::::M:::M
8 888888 M:::::::MM:::::::::::::::::M:::M:
888888 M::::::M:::::::::::::::::::M:::MM
888888 M:::::M::::::::::::::::::::::::M:M
888888 M:::::M:::::::::@::::::::::::::M::M
88888 M::::::::::::::@@:::::::::::::::M::M
88888 M::::::::::::::@@@::::::::::::::::M::M
88888 M:::::::::::::::@@::::::::::::::::::M::M
88888 M:::::m::::::::::@::::::::::Mm:::::::M:::M
8888 M:::::M:::::::::::::::::::::::MM:::::::M:::M
8888 M:::::M:::::::::::::::::::::::MMM::::::::M:::M
888 M:::::Mm::::::::::::::::::::::MMM:::::::::M::::M
8888 MM::::Mm:::::::::::::::::::::MMMM:::::::::m::m:::M
888 M:::::M::::::::::::::::::::MMM::::::::::::M::mm:::M
8888 MM:::::::::::::::::::::::::MM:::::::::::::mM::MM:::M:
M:::::::::::::::::::::::::M:::::::::::::::mM::MM:::Mm
MM::::::m:::::::::::::::::::::::::::::::::::M::MM:::MM
M::::::::M:::::::::::::::::::::::::::::::::::M::M:::MM
MM:::::::::M:::::::::::::M:::::::::::::::::::::M:M:::MM
M:::::::::::M88:::::::::M:::::::::::::::::::::::MM::MMM
M::::::::::::8888888888M::::::::::::::::::::::::MM::MM
M:::::::::::::88888888M:::::::::::::::::::::::::M::MM
M::::::::::::::888888M:::::::::::::::::::::::::M::MM
M:::::::::::::::88888M:::::::::::::::::::::::::M:MM
M:::::::::::::::::88M::::::::::::::::::::::::::MMM
M:::::::::::::::::::M::::::::::::::::::::::::::MMM
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WENA GRACIAS!!!!!!!!!
WENA GRACIAS!!!!!!!!!
MUY UTIIL! (e inutil...
MUY UTIIL!
(e inutil... depende)
gracias de nuevo!