Substitute Kazenga LuaLua snatched a point for Brighton in a 2-2 draw at Charlton, who twice threw away the lead.
The Addicks were leading through goals from Lawrie Wilson and Bradley Pritchard, either side of Craig Mackail-Smith's strike, but eight minutes after climbing off the bench, former Newcastle winger LuaLua marked his first appearance since October with the equaliser.
Just two minutes later the home fans were cheering again when Dale Stephens whipped in a cross which flew in at the far post with Wilson claiming the final touch.
It could have got worse for Brighton, but for Tomasz Kuszczak, who palmed Rob Hulse's header over and from the resulting corner, Michael Morrison headed too high.
But the visitors responded well and should have equalised when Mackail-Smith found Gordon Greer in front of goal, only for the defender to scoop his effort over from all of four yards out.
The leveller came in the 28th minute when Morrison made a mess of his clearing header and Mackail-Smith nipped in to tuck away his 10th goal of the season.
Brighton were still in the ascendancy after the break and Hamer parried a fierce drive from Will Buckley before Dobbie fired wide.
Dobbie was left kicking the post in frustration just before the hour mark after wasting another good chance.
Dean Hammond slipped in Buckley to cut the ball back for the former Swansea striker, who slid in to meet the ball but lifted it over the top.
Charlton had hardly troubled Kuszczak since their goal, but with their first genuine chance of the second half they went ahead again.
Johnnie Jackson's low cross ricocheted through the Brighton defence and Pritchard was on hand to sweep the ball into the net for his first league goal.
But three minutes later LuaLua grabbed a point for the Seagulls when his deflected shot wrong-footed Hamer and crashed into the net.
The Hoops' 2-1 home win over Spartak Moscow on Wednesday night sealed their place in the last 16 of the Champions League and they continued their good work in Ayrshire, starting when skipper Scott Brown fired them into the lead in the 27th minute.
Second-half goals from midfielder Joe Ledley and substitute Georgios Samaras were just reward for the Parkhead side's dominance, before Cillian Sheridan grabbed a late consolation.
The win keeps Celtic three points clear of second-placed Inverness, who were 3-0 winners at home to Hibernian.
Ross Draper's free header sent Caley Thistle on their way after 13 minutes before Richie Foran and Billy McKay secured their deserved win in the final 14 minutes.
Motherwell recorded their first home victory since the beginning of September as they defeated Ross County 3-2.
Rocco Quinn gave the visitors the lead after 17 minutes, however their advantage was short-lived as Michael Higdon headed home eight minutes later.
Nicky Law then fired the hosts ahead in the opening minute of the second half, but Quinn hammered home an equaliser.
Both sides showed a determination to grab a winner and Keith Lasley clinched the game for Motherwell when he struck with eight minutes remaining.
Hearts beat Aberdeen 2-0 with goals from Ryan Stevenson and Callum Paterson, while nine-man St Johnstone clung on for a 1-1 draw with St Mirren.
The Perth side had Chris Millar and Steven Anderson sent off but, despite the numerical advantage, St Mirren had only Paul Dummett's goal to show for their efforts as the visitors held out for a share of the points thanks to Murray Davidson's early goal.
