Emulate a 7-segment display

C, 106

Size is 74 chars if allowed to rename program "W00WG5WW1GW66WG4WW2GW33WG"

main(int i,char**s){
    for(s[0]="W00WG5WW1GW66WG4WW2GW33WG";i=*s[0]++;putchar(s[1][i&7]-49?i==71?10:32:42));
}

running:

./a.out 1101101
 ** 
   *
 ** 
*   
 ** 

notes:

'W' and 'G' (0x47 and 0x57) are chosen such that the value & 7 = 7, i.e they safely index the null character that terminates the input string.

Brainfuck - 224

++++++++++[>+>+++<<-]
>>++>,>,>,>,>,>,>,
<<<<<<<.
>[<+.->-]<<.
>>
>>>>>[<<<<<+<+>>>>>>-]<<<<<<.>[<->-]<.>>[<<+.->>-]<<<.>.
>>>>>>>[<<<<<<<+.->>>>>>>-]<<<<<<<<.
>>>>>>[<<<<+<+>>>>>-]<<<<<.>[<->-]<.
>>>[<<<+.->>>-]<<<<.>.
>>>>[<<<<+.>]

Prints using Exlamation points:

 ! 
! !
 !
! !
 !

Not the most readable, but not too horrible either.

Surprised at how close this is to not being last place.

Postscript 121 107

1 12 moveto{}5 0{0 -5 rmoveto}0 5 0 5 -5 0 0 -5 0 -5 5 0
n{49 eq{rlineto}{rmoveto}ifelse exec}forall stroke

requires n to be defined as the string to process so invoke like

gs -g7x14 -sn=1101101 lcd.ps

to get

the complete set is